Chums Floating Marsupial helps keep your valuables afloat. A zip pocket keeps ID, credit cards or cash secure and a slide pocket keeps your keys out of the way when not in use. Foam filled to float your keys, credit card and cash. Floats up to 2.6oz (75g) about 5 keys. This wallet is not waterproof. Easily visible with the bright yellow color and has a black split ring. PLEASE TEST flotation in shallow water before using. All keys do not weigh the same.