100% Waterproof & Durable: Haimont Dry Bag Backpack is made of wear-resistant 500D tarpaulin with high frequency welded seams for waterproof protection and durability making sure to keep your items and valuables dry when you do water sports Waterproof Phone Case: One dry bag with a extra IPX8 Certified waterproof phone case which is suitable for phones up to 6.7 Inches. High-definition window and touch-friendly design that suitable for all water sports Easy to Use & Tear Resistant: Just put your gear into the dry bag grab the top woven tape and roll down tightly 3 to 5 times then clip the buckles to complete the seal; the whole process is very quick. Reinforced stress point of D-rings with double sewing no ripping again even for heavy load Multiple Size & Carry Style: 10L & 20L dry bag include one adjustable and removable shoulder strap for cross-body 30L & 40L dry backpack with large capacity include two straps for backpack-style carrying meet your demands on different occasions Versatility: Haimont dry bag can float on water after being rolled and buckled so you can track your gear easily no more worrying about your items getting wet. Suitable for boating kayaking paddling sailing canoeing surfing or having fun on the beach.