3F UL Gear Exhaustible Compression Stuff Sacks (Various Sizes) 15D Nylon

This is a very interesting dry bag. With its help, a thick sleeping bag can also fit into a small bag smaller than 40 Lites.

This waterproof bag can not 100% prevent the expansion of sleeping bag. It can only temporarily help you compress the sleeping bag to a relatively small volume, the compression effect can last about half an hour, before it expands you can insert it into your backpack, and the backpack will limit its continued expansion.

100% waterproof

Please be advised Colour is random and changes per size on each batch.