If you want to compress your gear and keep it dry for your cycling or kayaking tour, the Evac Compression Dry Bag from Sea to Summit is the perfect solution. With an (uncompressed) size of 35 liters, it can hold your warm sleeping bag, your tent without poles, or all your clothing. The advantage over regular stuff sacks is that the contents of the Evac Compression Dry Bag stay truly dry thanks to the waterproof outer material with C0 treatment, the roll-top closure, and the sealed seams, while also being able to be stored in a compact size. The durable 70D outer material with PU coating is waterproof but allows air to pass through. When compressing, you can easily push the air out without needing to operate a separate vent. The compression straps make it easy to evenly compress soft items.