diff --git a/doc_examples/guide/dependency_injection/cookbook/project/Cargo.lock b/doc_examples/guide/dependency_injection/cookbook/project/Cargo.lock
index d331a5c8e..30ac35319 100644
--- a/doc_examples/guide/dependency_injection/cookbook/project/Cargo.lock
+++ b/doc_examples/guide/dependency_injection/cookbook/project/Cargo.lock
@@ -415,6 +415,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -670,6 +671,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/doc_examples/guide/request_data/buffered_body/project-custom_limit.snap b/doc_examples/guide/request_data/buffered_body/project-custom_limit.snap
index 6c127a14e..47e7c1420 100644
--- a/doc_examples/guide/request_data/buffered_body/project-custom_limit.snap
+++ b/doc_examples/guide/request_data/buffered_body/project-custom_limit.snap
@@ -2,10 +2,11 @@
 use pavex::blueprint::{constructor::Lifecycle, Blueprint};
 use pavex::f;
 use pavex::request::body::BodySizeLimit;
+use pavex::unit::ToByteUnit;
 
 pub fn body_size_limit() -> BodySizeLimit {
     BodySizeLimit::Enabled {
-        max_n_bytes: 10_485_760, // 10 MBs
+        max_size: 2.megabytes(),
     }
 }
 
diff --git a/doc_examples/guide/request_data/buffered_body/project-granular_limits.snap b/doc_examples/guide/request_data/buffered_body/project-granular_limits.snap
index 76291f200..2c56a4416 100644
--- a/doc_examples/guide/request_data/buffered_body/project-granular_limits.snap
+++ b/doc_examples/guide/request_data/buffered_body/project-granular_limits.snap
@@ -2,6 +2,7 @@
 use pavex::blueprint::{constructor::Lifecycle, router::POST, Blueprint};
 use pavex::f;
 use pavex::request::body::BodySizeLimit;
+use pavex::unit::ToByteUnit;
 
 pub fn blueprint() -> Blueprint {
     let mut bp = Blueprint::new();
@@ -21,7 +22,7 @@ fn upload_bp() -> Blueprint {
 
 pub fn upload_size_limit() -> BodySizeLimit {
     BodySizeLimit::Enabled {
-        max_n_bytes: 1_073_741_824, // 1GB
+        max_size: 1.gigabytes(),
     }
 }
 ```
\ No newline at end of file
diff --git a/doc_examples/guide/request_data/buffered_body/project/Cargo.lock b/doc_examples/guide/request_data/buffered_body/project/Cargo.lock
index c429ace23..612c727fa 100644
--- a/doc_examples/guide/request_data/buffered_body/project/Cargo.lock
+++ b/doc_examples/guide/request_data/buffered_body/project/Cargo.lock
@@ -416,6 +416,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -671,6 +672,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/doc_examples/guide/request_data/buffered_body/project/src/custom_limit/blueprint.rs b/doc_examples/guide/request_data/buffered_body/project/src/custom_limit/blueprint.rs
index e2cab8359..c0578f19b 100644
--- a/doc_examples/guide/request_data/buffered_body/project/src/custom_limit/blueprint.rs
+++ b/doc_examples/guide/request_data/buffered_body/project/src/custom_limit/blueprint.rs
@@ -1,10 +1,11 @@
 use pavex::blueprint::{constructor::Lifecycle, Blueprint};
 use pavex::f;
 use pavex::request::body::BodySizeLimit;
+use pavex::unit::ToByteUnit;
 
 pub fn body_size_limit() -> BodySizeLimit {
     BodySizeLimit::Enabled {
-        max_n_bytes: 10_485_760, // 10 MBs
+        max_size: 2.megabytes(),
     }
 }
 
diff --git a/doc_examples/guide/request_data/buffered_body/project/src/granular_limits/blueprint.rs b/doc_examples/guide/request_data/buffered_body/project/src/granular_limits/blueprint.rs
index d39449991..b5e7be101 100644
--- a/doc_examples/guide/request_data/buffered_body/project/src/granular_limits/blueprint.rs
+++ b/doc_examples/guide/request_data/buffered_body/project/src/granular_limits/blueprint.rs
@@ -1,6 +1,7 @@
 use pavex::blueprint::{constructor::Lifecycle, router::POST, Blueprint};
 use pavex::f;
 use pavex::request::body::BodySizeLimit;
+use pavex::unit::ToByteUnit;
 
 pub fn blueprint() -> Blueprint {
     let mut bp = Blueprint::new();
@@ -20,6 +21,6 @@ fn upload_bp() -> Blueprint {
 
 pub fn upload_size_limit() -> BodySizeLimit {
     BodySizeLimit::Enabled {
-        max_n_bytes: 1_073_741_824, // 1GB
+        max_size: 1.gigabytes(),
     }
 }
diff --git a/doc_examples/guide/request_data/buffered_body/tutorial.yml b/doc_examples/guide/request_data/buffered_body/tutorial.yml
index a5d43f76b..680306401 100644
--- a/doc_examples/guide/request_data/buffered_body/tutorial.yml
+++ b/doc_examples/guide/request_data/buffered_body/tutorial.yml
@@ -9,7 +9,7 @@ snippets:
     hl_lines: [ 4 ]
   - name: "custom_limit"
     source_path: "src/custom_limit/blueprint.rs"
-    ranges: [ "0..13", "19..20" ]
+    ranges: [ "0..14", "20..21" ]
   - name: "no_limit"
     source_path: "src/no_limit/blueprint.rs"
     ranges: [ "0..11", "17..18" ]
diff --git a/doc_examples/guide/request_data/json/project/Cargo.lock b/doc_examples/guide/request_data/json/project/Cargo.lock
index b724ea2a5..a4fcaa780 100644
--- a/doc_examples/guide/request_data/json/project/Cargo.lock
+++ b/doc_examples/guide/request_data/json/project/Cargo.lock
@@ -416,6 +416,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -671,6 +672,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/doc_examples/guide/request_data/path/project/Cargo.lock b/doc_examples/guide/request_data/path/project/Cargo.lock
index b6568f1da..5e096317a 100644
--- a/doc_examples/guide/request_data/path/project/Cargo.lock
+++ b/doc_examples/guide/request_data/path/project/Cargo.lock
@@ -416,6 +416,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -671,6 +672,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/doc_examples/guide/request_data/query/project/Cargo.lock b/doc_examples/guide/request_data/query/project/Cargo.lock
index 11003fbec..671814c46 100644
--- a/doc_examples/guide/request_data/query/project/Cargo.lock
+++ b/doc_examples/guide/request_data/query/project/Cargo.lock
@@ -394,6 +394,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -671,6 +672,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/doc_examples/guide/request_data/query_params/project/Cargo.lock b/doc_examples/guide/request_data/query_params/project/Cargo.lock
index 3f70555d5..9eb45e8e8 100644
--- a/doc_examples/guide/request_data/query_params/project/Cargo.lock
+++ b/doc_examples/guide/request_data/query_params/project/Cargo.lock
@@ -394,6 +394,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -671,6 +672,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/doc_examples/guide/request_data/request_target/project/Cargo.lock b/doc_examples/guide/request_data/request_target/project/Cargo.lock
index 3da5d926b..0093eca7b 100644
--- a/doc_examples/guide/request_data/request_target/project/Cargo.lock
+++ b/doc_examples/guide/request_data/request_target/project/Cargo.lock
@@ -394,6 +394,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -670,6 +671,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/doc_examples/guide/request_data/route_params/project/Cargo.lock b/doc_examples/guide/request_data/route_params/project/Cargo.lock
index 04ccc5c90..809a84584 100644
--- a/doc_examples/guide/request_data/route_params/project/Cargo.lock
+++ b/doc_examples/guide/request_data/route_params/project/Cargo.lock
@@ -394,6 +394,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -671,6 +672,15 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/libs/Cargo.lock b/libs/Cargo.lock
index e8140d6c8..90f05f046 100644
--- a/libs/Cargo.lock
+++ b/libs/Cargo.lock
@@ -2068,6 +2068,7 @@ dependencies = [
  "thiserror",
  "tokio",
  "tracing",
+ "ubyte",
 ]
 
 [[package]]
@@ -3375,6 +3376,15 @@ version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
 
+[[package]]
+name = "ubyte"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "ucd-trie"
 version = "0.1.6"
diff --git a/libs/pavex/Cargo.toml b/libs/pavex/Cargo.toml
index d710191c6..3ad66049c 100644
--- a/libs/pavex/Cargo.toml
+++ b/libs/pavex/Cargo.toml
@@ -23,6 +23,7 @@ paste = "1"
 tracing = "0.1"
 http-body-util = "0.1"
 pin-project-lite = "0.2"
+ubyte = { version = "0.10.4", features = ["serde"] }
 
 # Route parameters
 matchit = { git = "https://github.com/ibraheemdev/matchit", branch = "master" }
diff --git a/libs/pavex/src/lib.rs b/libs/pavex/src/lib.rs
index 4ec17ae96..9102abced 100644
--- a/libs/pavex/src/lib.rs
+++ b/libs/pavex/src/lib.rs
@@ -22,3 +22,4 @@ pub mod router;
 pub mod serialization;
 #[cfg(feature = "server")]
 pub mod server;
+pub mod unit;
diff --git a/libs/pavex/src/request/body/buffered_body.rs b/libs/pavex/src/request/body/buffered_body.rs
index 5764d7df2..6231875d7 100644
--- a/libs/pavex/src/request/body/buffered_body.rs
+++ b/libs/pavex/src/request/body/buffered_body.rs
@@ -1,6 +1,7 @@
 use bytes::Bytes;
 use http::header::CONTENT_LENGTH;
 use http_body_util::{BodyExt, Limited};
+use ubyte::ByteUnit;
 
 use crate::blueprint::constructor::{Constructor, Lifecycle};
 use crate::blueprint::Blueprint;
@@ -79,10 +80,11 @@ use super::{
 /// use pavex::f;
 /// use pavex::blueprint::{Blueprint, constructor::Lifecycle};
 /// use pavex::request::body::BodySizeLimit;
+/// use pavex::unit::ToByteUnit;
 ///
 /// pub fn body_size_limit() -> BodySizeLimit {
 ///     BodySizeLimit::Enabled {
-///         max_n_bytes: 10_485_760 // 10 MBs
+///         max_size: 10.megabytes()
 ///     }
 /// }
 ///
@@ -123,6 +125,7 @@ use super::{
 /// use pavex::f;
 /// use pavex::blueprint::{Blueprint, constructor::Lifecycle, router::{GET, POST}};
 /// use pavex::request::body::BodySizeLimit;
+/// use pavex::unit::ToByteUnit;
 /// # pub fn home() -> String { todo!() }
 /// # pub fn upload() -> String { todo!() }
 ///
@@ -145,7 +148,7 @@ use super::{
 ///
 /// pub fn upload_size_limit() -> BodySizeLimit {
 ///     BodySizeLimit::Enabled {
-///         max_n_bytes: 1_073_741_824 // 1GB
+///         max_size: 1.gigabytes()
 ///     }
 /// }
 /// ```
@@ -166,8 +169,8 @@ impl BufferedBody {
         body_size_limit: BodySizeLimit,
     ) -> Result<Self, ExtractBufferedBodyError> {
         match body_size_limit {
-            BodySizeLimit::Enabled { max_n_bytes } => {
-                Self::_extract_with_limit(request_head, body, max_n_bytes).await
+            BodySizeLimit::Enabled { max_size } => {
+                Self::_extract_with_limit(request_head, body, max_size).await
             }
             BodySizeLimit::Disabled => match body.collect().await {
                 Ok(collected) => Ok(Self {
@@ -194,7 +197,7 @@ impl BufferedBody {
     async fn _extract_with_limit<B>(
         request_head: &RequestHead,
         body: B,
-        max_n_bytes: usize,
+        max_size: ByteUnit,
     ) -> Result<Self, ExtractBufferedBodyError>
     where
         B: hyper::body::Body,
@@ -207,7 +210,7 @@ impl BufferedBody {
 
         // Little shortcut to create a `SizeLimitExceeded` error.
         let limit_error = || SizeLimitExceeded {
-            max_n_bytes,
+            max_size,
             content_length,
         };
 
@@ -218,11 +221,14 @@ impl BufferedBody {
         // body reading process entirely rather than reading the body incrementally
         // until the limit is reached.
         if let Some(len) = content_length {
-            if len > max_n_bytes {
+            if len > max_size {
                 return Err(limit_error().into());
             }
         }
 
+        // We saturate to `usize::MAX` if we happen to be on a platform where
+        // `usize` is smaller than `u64` (e.g. 32-bit platforms).
+        let max_n_bytes = max_size.as_u64().try_into().unwrap_or(usize::MAX);
         // If the `Content-Length` header is missing, or if the expected size of the body
         // is smaller than the maximum size limit, we start buffering the body while keeping
         // track of the size limit.
@@ -253,6 +259,7 @@ impl From<BufferedBody> for Bytes {
 #[cfg(test)]
 mod tests {
     use http::HeaderMap;
+    use ubyte::ToByteUnit;
 
     use crate::request::RequestHead;
 
@@ -270,9 +277,13 @@ mod tests {
 
     #[tokio::test]
     async fn error_if_body_above_size_limit_without_content_length() {
-        let body = crate::response::body::raw::Full::new(Bytes::from(vec![0; 1000]));
+        let raw_body = vec![0; 1000];
+
         // Smaller than the size of the body.
-        let max_n_bytes = 100;
+        let max_n_bytes = 100.bytes();
+        assert!(raw_body.len() > max_n_bytes.as_u64() as usize);
+
+        let body = crate::response::body::raw::Full::new(Bytes::from(raw_body));
         let err = BufferedBody::_extract_with_limit(&dummy_request_head(), body, max_n_bytes)
             .await
             .unwrap_err();
@@ -280,7 +291,9 @@ mod tests {
         insta::assert_debug_snapshot!(err, @r###"
         SizeLimitExceeded(
             SizeLimitExceeded {
-                max_n_bytes: 100,
+                max_size: ByteUnit(
+                    100,
+                ),
                 content_length: None,
             },
         )
@@ -296,21 +309,23 @@ mod tests {
 
         // Smaller than the value declared in the `Content-Length` header,
         // even though it's bigger than the actual size of the body.
-        let max_n_bytes = 100;
+        let max_size = 100.bytes();
         let body = crate::response::body::raw::Full::new(Bytes::from(vec![0; 500]));
         request_head
             .headers
             .insert("Content-Length", "1000".parse().unwrap());
 
         // Act
-        let err = BufferedBody::_extract_with_limit(&request_head, body, max_n_bytes)
+        let err = BufferedBody::_extract_with_limit(&request_head, body, max_size)
             .await
             .unwrap_err();
         insta::assert_display_snapshot!(err, @"The request body is larger than the maximum size limit enforced by this server.");
         insta::assert_debug_snapshot!(err, @r###"
         SizeLimitExceeded(
             SizeLimitExceeded {
-                max_n_bytes: 100,
+                max_size: ByteUnit(
+                    100,
+                ),
                 content_length: Some(
                     1000,
                 ),
diff --git a/libs/pavex/src/request/body/errors.rs b/libs/pavex/src/request/body/errors.rs
index 7247b41a5..f6a8a9242 100644
--- a/libs/pavex/src/request/body/errors.rs
+++ b/libs/pavex/src/request/body/errors.rs
@@ -1,5 +1,6 @@
 //! Errors that can occur while extracting information from the request body.
 use crate::response::Response;
+use ubyte::ByteUnit;
 
 #[derive(Debug, thiserror::Error)]
 #[non_exhaustive]
@@ -61,7 +62,7 @@ impl ExtractBufferedBodyError {
 /// The request body is larger than the maximum size limit enforced by this server.
 pub struct SizeLimitExceeded {
     /// The maximum size limit enforced by this server.
-    pub max_n_bytes: usize,
+    pub max_size: ByteUnit,
     /// The value of the `Content-Length` header for the request that breached the body
     /// size limit.  
     ///
diff --git a/libs/pavex/src/request/body/limit.rs b/libs/pavex/src/request/body/limit.rs
index 48dda30db..b1c66217e 100644
--- a/libs/pavex/src/request/body/limit.rs
+++ b/libs/pavex/src/request/body/limit.rs
@@ -1,6 +1,8 @@
 use crate::blueprint::constructor::{Constructor, Lifecycle};
 use crate::blueprint::Blueprint;
 use crate::f;
+use crate::unit::ByteUnit;
+use ubyte::ToByteUnit;
 
 #[derive(Debug, Clone, Copy)]
 /// An upper limit on the size of incoming request bodies.  
@@ -10,7 +12,7 @@ pub enum BodySizeLimit {
     /// There is an active limit on the size of incoming request bodies.
     Enabled {
         /// The maximum size of incoming request bodies, in bytes.
-        max_n_bytes: usize,
+        max_size: ByteUnit,
     },
     /// There is no limit on the size of incoming request bodies.
     Disabled,
@@ -29,7 +31,7 @@ impl BodySizeLimit {
 impl Default for BodySizeLimit {
     fn default() -> Self {
         Self::Enabled {
-            max_n_bytes: 2_097_152, // 2 MBs
+            max_size: 2.megabytes(),
         }
     }
 }
diff --git a/libs/pavex/src/unit.rs b/libs/pavex/src/unit.rs
new file mode 100644
index 000000000..447677930
--- /dev/null
+++ b/libs/pavex/src/unit.rs
@@ -0,0 +1,2 @@
+//! Type-safe wrappers for working with measurable quantities (e.g. bytes).
+pub use ubyte::{ByteUnit, ToByteUnit};
diff --git a/libs/pavex_macros/tests/fail/serde_conflict.stderr b/libs/pavex_macros/tests/fail/serde_conflict.stderr
index 5494b8d2e..f4c6eb1d6 100644
--- a/libs/pavex_macros/tests/fail/serde_conflict.stderr
+++ b/libs/pavex_macros/tests/fail/serde_conflict.stderr
@@ -1,8 +1,8 @@
-error: `RouteParams` does not support `serde` attributes on the top-level struct or any of its fields.
+error: `PathParams` does not support `serde` attributes on the top-level struct or any of its fields.
 
-       `RouteParams` takes care of deriving `serde::Serialize` and `serde::Deserialize` for your struct, using the default configuration. This allow Pavex to determine, at code-generation time, if the route params can be successfully extracted from the URL of incoming requests for the relevant routes (e.g. do you have a named field that doesn't map to any of the registered route parameters?).
+       `PathParams` takes care of deriving `serde::Serialize` and `serde::Deserialize` for your struct, using the default configuration. This allow Pavex to determine, at code-generation time, if the route params can be successfully extracted from the URL of incoming requests for the relevant routes (e.g. do you have a named field that doesn't map to any of the registered route parameters?).
 
-       If the default `serde` configuration won't work for your case, you should not derive `RouteParams` and opt instead for implementing `serde::Serialize` and `serde::Deserialize` directly for your struct (either manually or using a derive with custom attributes).
+       If the default `serde` configuration won't work for your case, you should not derive `PathParams` and opt instead for implementing `serde::Serialize` and `serde::Deserialize` directly for your struct (either manually or using a derive with custom attributes).
        Keep in mind that by going down this route you give up compile-time checking of the route parameters!
  --> tests/fail/serde_conflict.rs:3:1
   |
diff --git a/libs/pavex_macros/tests/fail/serde_conflict_after_route_params_without_attributes.stderr b/libs/pavex_macros/tests/fail/serde_conflict_after_route_params_without_attributes.stderr
index ccf0c4c9f..d663e4343 100644
--- a/libs/pavex_macros/tests/fail/serde_conflict_after_route_params_without_attributes.stderr
+++ b/libs/pavex_macros/tests/fail/serde_conflict_after_route_params_without_attributes.stderr
@@ -1,8 +1,8 @@
 error[E0119]: conflicting implementations of trait `Deserialize<'_>` for type `MyStruct`
  --> tests/fail/serde_conflict_after_route_params_without_attributes.rs:1:1
   |
-1 | #[pavex_macros::RouteParams]
-  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `MyStruct`
+1 | #[pavex_macros::PathParams]
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `MyStruct`
 2 | #[derive(serde::Deserialize)]
   |          ------------------ first implementation here
   |
diff --git a/libs/pavex_macros/tests/fail/serde_conflict_before_route_params_without_attributes.stderr b/libs/pavex_macros/tests/fail/serde_conflict_before_route_params_without_attributes.stderr
index 1392362b2..3613fb445 100644
--- a/libs/pavex_macros/tests/fail/serde_conflict_before_route_params_without_attributes.stderr
+++ b/libs/pavex_macros/tests/fail/serde_conflict_before_route_params_without_attributes.stderr
@@ -3,7 +3,7 @@ error[E0119]: conflicting implementations of trait `Deserialize<'_>` for type `M
   |
 1 | #[derive(serde::Deserialize)]
   |          ------------------ first implementation here
-2 | #[pavex_macros::RouteParams]
-  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `MyStruct`
+2 | #[pavex_macros::PathParams]
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `MyStruct`
   |
   = note: this error originates in the derive macro `serde::Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)