tosh the coat is not all rubber, the inside is padded and has interwoven fabric, also its not completly closed as you can see in the pic they use velcro straps, jeff, the pump would go somewhere most comfortable on the back of the coat, say a welted plastic pocket, the tube would be cut near the end leaving a small bit to fit into the inlet of the pump, and the remainder to the outlet, this is going to work theres no doubts about it, o as for the solar power heating, you dont have to wait on the sun anymore, you get what you call a solar torch, it sits on the solar panels and heats it up for you, when you get up early in the mornings pre heat them so its warmed up before you leave for work, so theirs always a way round everything except the wife lol