diff --git a/TinySTL/COWPtr.h b/TinySTL/COWPtr.h
new file mode 100644
index 0000000..e94fbbc
--- /dev/null
+++ b/TinySTL/COWPtr.h
@@ -0,0 +1,14 @@
+#ifndef _COWPTR_H_
+#define _COWPTR_H_
+
+#include "Memory.h"
+
+namespace TinySTL{
+	template<class T>
+	class cow_ptr{
+	private:
+		shared_ptr<T> ptr_;
+	};
+}
+
+#endif
\ No newline at end of file