A 25-liter backpack constructed in eco-friendly TPU with RF-welded waterproof seams and airtight zipper, it is perfect for boats to paddleboards to ski slopes. The Airtight-Watertight zipper ensures contents will stay dry, while offering the convenience of zipper access. This pack floats! Sternum and waist straps keep the pack secure to user for action sports. The lightweight design is friendly to all sizes of users. Comes with large external side pockets, gear straps, internal security pocket, and laptop sleeve.