Description:Material: Made of 500D mesh cloth and PVC Material, IPX6 waterproof and wear resistant.Large Capacity: Side storage pocket design beach Bag, backpack closure, waterproof reinforced, buckle strap for hanging outdoor items .How to Use: the straps on the top of the waterproof dry backpack after stores your gear, then grab and roll the straps 3-4 times and connect each side buckle of the dry sack backpack to complete the seal.Easy to Carry: Lightweight design, convenient travel, Comfortable and breathable, there are two ways to switch between shoulders/single shoulders .Widely Used: Suitable for outdoor activities, no matter hiking, camping, climbing, biking, even water sports like floating, kayaking, swimming, rafting, boating, canoeing, fishing, surfing, rowing.Specification:Material: PVC, Mesh ClothCapacity: 30LSize: 33cmx22cmx68.5cm/12.99inchx8.66inchx26.97inchPackage Includes:1 Piece Waterproof Dry Bag BackpackNote:Conversion: 1inch=2.54cm, 1cm=0.393inchPlease allow slightly 0-1cm difference due to manual measurement.Colors can appear different depending on light and how the listing is viewed.Thanks for your understanding and attention. Wish you a pleasant shopping experience