diff --git a/README.md b/README.md
index 8c39e0d..aa23198 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
     - Continuous memory layout
 * Memory efficient
     - Uses only 24 extra bytes per cache object
+    - TTL (8 bytes) + ArrayList node (2 x 4 bytes) + Key hash (4 bytes) + Hash Entry index (4 bytes)
 
 ### Getting Started