The Sea to Summit Air Stream Pump Sack is a multi-purpose sack that can be used as a 20L drybag, down sleeping bag storage bag or a sleeping mat pump.
Based on the 20L Ultra-Sil® Nano Dry Sack, the Sea to Summit Air Stream Pump Sack has an added valve plug and foot loop to enable it to work as a sleeping mat pump. With the ability to be inflated with a single breath, most sleeping mats can be filled with only two or three cycles, so you're ready to go quickly with minimal breath condensation in your mat or dizziness from blowing the mat up. The Air Stream can also be used as a 20L dry bag or ultralight pack liner...how versatile can you get?!
Inflates most sleeping mats in only two or three compressions