Versatile and lightweight bag: perfect for hiking, snowboarding, skiing, fishing, at the beach, and a variety of other outdoor activities. Roll-top sealed closure. Made from high-quality PVC. Extremely lightweight and versatile. Whether as a phone case, sports bag, or storage pouch, the waterproof ISAR pack sack is ideal for hiking, camping, outdoor tours, snowboarding, skiing, fishing, sailing, and beach outings. With its reinforced roll-top closure and high-frequency heat sealing, the bag offers optimal protection against rain and splashes, making it perfect for summer bike rides as well as in cold and wet seasons. The pack sack is highly durable, easy to clean, and practical to store. The waterproof storage bag comes with a shoulder strap and a D-ring for easy attachment. The bag is extremely water-resistant, but not 100% waterproof when fully submerged. Therefore, the dry bag should not be submerged underwater, especially with valuables and electronic equipment inside.