Large-capacity chamberfills easilywith a light breath. Reinforced stay-open collarfolds over to lock in air for quick transfer to your pad. Seamlesslyconnects to Laylow multivalvefor precise and rapid inflation. Durable 20D fabricis laminated and embossed with welded seams to enhance strength. Rolls up to thesize of a Sharpiemarker. Filling 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.