This pump uses inflated tubes (1 deep breath to fill) as the flexible support structure instead of a spring or foam. The connection to the air bladder is not specific for Nemo pads and I use it with my Exped down and Nemo pad just fine. Very slick concept and easily packs down to about the size of a racquette ball to go un-noticed in with your stuffed sleeping bag. Gotta admire the design on this
This review was written in the old system and had content requirements that are different than reviews written today.