Product name: Waterproof Dry Bag Use size: 3L: 24*11*17cm/13*4*7in 5L: 30*13*20cm/12*5*8in 12L: 36*16*24cm/14*6*9in 20L: 42*17*27cm/17*7*11in 35: 52*22*34cm/21*9*13in Product material: 70D polyester tear resistant fabric Product features: 1. This is an oval bottom waterproof bag, the bottom is flat, can be placed upright, not easy to roll, more convenient storage 2.70D polyester fiber fabric, waterproof and tear resistant, good performance 3. Rolling edge sealing design, sealing edge reinforcement to prevent water seepage 4. Large capacity, multi-specification, lightweight design, can be used as waterproof bag, multi-functional storage bag, suitable for cycling, camping, river, backpacking and other activities, can also be paired with wind rope to hang food and items in high places to prevent wild animals from eating Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact me we will give you some suggestion, but it is for you reference only. Package includes: 1 pc Waterproof Dry Bag