diff --git a/src/libraries/Microsoft.Extensions.Caching.Memory/src/MemoryCacheOptions.cs b/src/libraries/Microsoft.Extensions.Caching.Memory/src/MemoryCacheOptions.cs
index 7401c97d04ae8..a6117b07beaad 100644
--- a/src/libraries/Microsoft.Extensions.Caching.Memory/src/MemoryCacheOptions.cs
+++ b/src/libraries/Microsoft.Extensions.Caching.Memory/src/MemoryCacheOptions.cs
@@ -35,6 +35,12 @@ public class MemoryCacheOptions : IOptions<MemoryCacheOptions>
         /// <summary>
         /// Gets or sets the maximum size of the cache.
         /// </summary>
+        /// <remarks>
+        /// The units are arbitrary. Users specify the size of every entry they add to the cache.
+        /// If no size is specified, the entry has no size and the size limit is ignored for that entry.
+        /// For more information, see
+        /// <see href="https://learn.microsoft.com/aspnet/core/performance/caching/memory#use-setsize-size-and-sizelimit-to-limit-cache-size">Use SetSize, Size, and SizeLimit to limit cache size</see>.
+        /// </remarks>
         public long? SizeLimit
         {
             get => _sizeLimit < 0 ? null : _sizeLimit;