The Rope Sling Fits The Body Like A Bag Should. Its Similar In Size And Design To Its Fraternal Twin The Kavu Rope Bag With One Exception: The Rope Sling Is Made Of Polyester, Making It Water Resistant.it Also Has An Ultra-comfortable Adjustable Rope Shoulder Strap With Side Release Buckle, Two Vertical Zip Compartments, Two Key Or Cell Phone Pockets, And A Padded Back With Kavu Embroidery. Plus, It Comes In A Wide Variety Of Colors And Patterns - So, Express Yourself.