Sea to Summit Air Stream Pump Dry Sack

Sea to Summit Airstream Pump Dry Sack helps to reduce your pack size, thanks to its clever combination of two products into one. Based on their 35L Ultra-Sil Nano dry sack, this big-volume sleeping mattress pump has an added valve plug and foot loop for easy pumping. Inflated with a little more than a single breath, you should be able to fill your Sea to Summit sleeping mats in as little as two to three cycles of pumping. When finished as a pump, the sack can then be used as a 35L dry sack or ultralight pack liner.