Vortex Pump Sack backpacks and a secure back pocket

and a secure back pocket zipper

MAIN: 70D Nylon Ripstop

Durable plastic buckle

Weight: 19oz / 538g

Elastic binding around collar

Vortex Pump Sack backpacks and a secure back pocketFilling your air pad just got a lot faster and easier with the new Vortex high capacity pump sack. This smartly designed pump sack features a massive chamber that fills with ease, a stay open collar for hassle free inflation, and durable ultralight PU polyester that rolls up without adding bulk. Vortex fills a regular air pad completely with 2 3 fills and greatly reduces the amount of moisture that enters the pad. Features Large capacity chamber fills