On Monday, January 15, 2018 at 4:36:40 PM UTC, Roy B. wrote:
Does anybody know a source for the inflatable lumbar bladder (with hose & pump bulb) that goes in some parachute packs - like the old Security 150s?
ROY

Hi Roy,

I use an adapted old anaeroid blood pressure cuff but you can buy the same thing marketed as inflatable lumbar supports e.g.

https://www.amazon.com/Tcare-Multifu...2Bsupport&th=1

John G