Review on HPDAVV Bi Directional Intelligent Mattresses Inflatables by John Floyd

I went with a 20psi pump. The pump worked perfectly for two of the five chambers. When I connected the hose to the third chamber inflation valve, the cheap plastic part of the female-threaded hose split all the way around (see: the place where the valve adapters attached broke). The pump seems to work well but is matched with the thinnest plastic for the hose and connectors. I recommend spending the extra $50 and getting a quality pump with quality parts. You get what you pay for, junk!