The Evac Compression Dry Bag UL compresses your gear while keeping it dry. This practical accessory from Sea to Summit is available in various sizes from 3 to 20 liters, allowing you to choose the right option for your packed contents – a larger one for a thick sleeping bag or your tent without poles (if the included stuff sack doesn't provide the desired compression) or a smaller one, for example, for laundry. The advantage over regular stuff sacks is that the contents remain truly dry in the Evac Compression Dry Bag UL thanks to the waterproof outer material with C0 treatment, the roll-top closure, and the sealed seams. It can be packed into your backpack or bike bag with an incredibly compact size. While the outer material is waterproof, it allows air to pass through. When compressing, you can easily push the air out without needing to operate an extra vent. The compression straps make it easy to evenly compress soft items.