diff --git a/includes/type/size.pat b/includes/type/size.pat
new file mode 100644
index 0000000..6d3f1ec
--- /dev/null
+++ b/includes/type/size.pat
@@ -0,0 +1,40 @@
+namespace type {
+
+    using Size8   = u8   [[format("type::impl::size_formatter")]];
+    using Size16  = u16  [[format("type::impl::size_formatter")]];
+    using Size32  = u32  [[format("type::impl::size_formatter")]];
+    using Size64  = u64  [[format("type::impl::size_formatter")]];
+    using Size128 = u128 [[format("type::impl::size_formatter")]];
+
+    namespace impl {
+
+        fn size_formatter(u128 size) {
+            u32 i = 0;
+            while (size >= 1024 && i <= 6) {
+                i += 1;
+                size /= 1024;
+            }
+            
+            str result = std::format("{} ", size);
+            
+            if (i == 0 && size == 1)
+                return result + "Byte";
+            else if (i == 0)
+                return result + "Bytes";
+            else if (i == 1)
+                return result + "kiB";
+            else if (i == 2)
+                return result + "MiB";
+            else if (i == 3)
+                return result + "GiB";
+            else if (i == 4)
+                return result + "TiB";
+            else if (i == 5)
+                return result + "PiB";
+            else
+                return result + "EiB";
+        };
+
+    }
+
+}
\ No newline at end of file