PAMASE Waterproof Floatable Waist Bag/Dry Pouch with Waist Strap for Kayak Boating Swimming Fishing SPECIFIC SEALING SYSTEM - Triple waterproof safety system with strict test, functionates well under 20 meters in water. FLOATABLE IN WATER - Made with durable PVC and ABS, just allows some air in, the waist bag can float in case the belongs fallen into water accidentally. ADJUSTABLE WAIST STRAP UP TO 44''- Strong enough strap with max 44''(length), fits for anyone from teenages to adults. COMPACT ROOM - 5.5''(height) x 7.9''(length) x 2.1''(width), enough for your purse, keys, cellphone and glasses during water activities.