Aquafree Waterproof 2L Green Dry Bag, Can Hold Cell Phone, Wallet, Keys and Other Small Items FOUR SIZE - 5L size: 7.1 x 14.6 inch(0.33 Pounds/150g); 10L size: 8.1 x 19.3 inch(0.44 Pounds/200g); 20L size: 13 x 27.2 inch(0.567 Pounds/259g) VERSATILE - Your gear will stay dry inside these round bottom dry bags, even in adverse conditions. Shut out water by rolling down the top a few times and snapping the side release buckles together. DURABLE - Aquafree waterproof bag stains resistant, anti-static, UV protected, anti-bacterial, and temperature resistant. What's most important though is that it has an incredibly high tear strength and it's pliable so you can easily load up and close the bag without struggle. Thermo welding technology ensures the strong seams are watertight. Your dry bag is crafted with reinforced construction at all stress points, making it even tougher! WATERPROOF GUARANTEE - Aquafree waterproof dry bags are drafted with a solid roll top closure from state of the art materials, stay soft and flexible even in the coldest weather. They are the toughest bag, made of the finest material available: Pure Grade Y7 .5mm thick 500D (Denier Density) waterproof polymer, to keep all your gear safe and dry. Backed by a Hassle Free Lifetime Warranty, our customers venture with confidence. SHOULDER STRAP - 5L & 10L dry bags come with a 24-42 inch single shoulder strap. 20L & 30L dry bags are equipped with easily adjustable and durable backpack style shoulder straps, they can be used as both sling bags and shoulder backpacks. 20L & 30L & 40L Upgraded Version dry bags also come with a waistband for added stability, it also makes the bag as a flunkey: the bag floats on water and follow you when you are in the sea or river or swimming pool.