Set of 4 Thick Waterproof Nylon Drawstring Backpack Portable Dry Bags(1513'') Size: 39*33cm (15*13''). Include FOUR dry bags in random colors. Nylon material, keeping your geers and belongings away from rain/water. Lightweight and portable waterproof backpack dry bags. Can hold clothing/shoes/phone/geers/other little stuff, etc. Ideal storage accessories for camping, hiking, climbing, picnicing, boating, sailing, swimming, travelling and other outdoor activities.