diff --git a/binary/limits.go b/binary/limits.go
new file mode 100644
index 0000000..8b77bff
--- /dev/null
+++ b/binary/limits.go
@@ -0,0 +1,10 @@
+package binary
+
+import "math"
+
+const (
+	MaxContentSize = math.MaxUint16
+	MaxKind        = math.MaxUint16
+	MaxTagCount    = math.MaxUint16
+	MaxTagSize     = math.MaxUint16
+)