100% Nylon 5,000mm High Waterproof- Manufactured from 20D RWM nylon with a smooth siliconized finis, waterproof membrane lining and PU tape sealed for extra strength, durability and 5,000mm waterhead (the higher the waterhead rating, the more waterproof the fabric). 117g Truly Ultralight - Ultralight Dry Bag Large Set includs 12L, 20L and quick-adjust nylon shoulder strap, Lightweight materials keep the total sacks weight is only 117g(0.25lb), Comfortable and easy to carry. As Shoulder Bag - Link quick-adjust nylon shoulder strap to the D-ring attachment point on the bag, then the drysack morphs into a waterproof sling drybag for water sports or day trips. As Laundry Bag - Hypalon hang loop behind the TPU reinforced webbing lined closure for hanging on, wide opening for easy access when you fill it. Streamlined shape saves packing space, and oval base resists rolling. Large 3 Pack - ①12L(9.3x7x19.7in 23.8x17.8x50cm) best use for a three-season down sleeping bag, or all your clothes for an ultralight backpacking trip. ②20L(10.5x8x22.8in 26.8x20.3x58cm) best use for a three-season synthetic sleeping bag plus a reactor liner. ③ Shoulder Strap(Adjustable length range 60-110cm), It can be used with detachable shoulder straps of 8L L L. Engineered to 5,000mm waterproof rating, the ultralight siliconized dry bag offers unprecedented protection from water and weather. Made with lightweight, durable 20D RWM nylon fabric keep the 20L drybag weight under 62g. The semi-translucent fabric makes it's easy to see what's in each dry bag. Non-wicking hypalon roll-top closure, A oval base for ease of packing and PU taped seams to keep moisture out. An excellent travel gear for ultra-lightweight backpacking, camping touring, boating and water sports.