CRUMPLER BAGS are tough, watreproof, spongy and STRONG. Yes, strong enough for international acts of peace-making or for use as groin protectors while swimming in shark cages or playing roller hockey. Crumpler, developed by Stu Crumpler, is a slightly irreverent, high quality designer of messenger, shoulder and camera bags. In the words of Crumpler: "Crumpler Bags not only look good, they are made good. How good? So good that we could ONLY EVER THINK OF USING DUPONT COURDURA®PLUS for CRUMPLER BAGS. And because it's twice as tough as regular nylon, 3X tougher than polyester, 4X tougher than polypropylene, 14X tougher than cotton and 600X tougher than that skinny bit in the bottom portion of your underwear. They are not the type to puncture or tear easily, they have airline strength straps and buckles and size 10 zips to make sure everything in your bag stays in your bag, always. CRUMPLER makes bold bags that are born for the hard miles. Minimize