IPX6 waterproofMade from 500D vinylThese sturdy bags are designed to keep your stuff in place when you're out and about.They're part of our 'Waterproof'range.They feature foam padding for all-day comfort.The secure waist strap will stay in place whatever you doThey're fully waterproof (not submersible). Key featuresThey're made from sturdy 500D vinylEasy to close, just roll from top to bottom 3 times. We've also added a Velcro® strap to make it even easier!Waterproof quick-access pocket, ideal for money and phoneInternal zipped pocket secures the most important itemsComfortable, breathable mesh padding offers all-day comfort. Matt Black onlyOn the black version there's a reflective strip around the zipper. You have to roll the bag very tightly to align the two Velcro halves. This is essential if you want your bag to be waterproof. Note: Velcro® is a registered trademark of Velcro Industries B.V.