Therm-A-Rest Neoair Airtap Pump
Turn a bag into a mattress inflation system by using the included lightweight plastic bags, or go with a more permanent option like a dry bag or stuff sack.
Pierce or cut the bottom of any air-tight bag with the piercing tip and attach the valve coupler. Loft the bag, seal and roll, filling any NeoAir mattress with little effort or additional weight in your pack. An included cap can maintain waterproof performance of lightweight stuff sacks but it is suggested you no longer submerge those bags.