First; I'm not asking about Boost Oxygen cans or those over the counter products. I've never had altitude sickness before, don't want to. I'm going to be spending about ten days riding back country above 10,000 feet in June. Two oxygen related experiences I've encountered were Bear Tooth Pass and Pike's Peak. Walking around BTP taking pictures etc. was a little difficult at times. Short breaks were required. Atop Pike's Peak it was difficult just walking to the store and back from the parking lot. Both these events were 20 years ago. I'm 66 now. I got a prescription for 125mg Diamox (Acetazolamide) and an order that will allow me to purchase medical grade O2 for this and I'll do a couple of days altitude acclimation around Denver (5000) and then Colorado Springs (6000). I live a couple hundred feet above sea level. So I'm looking for a backup oxygen delivery system that's reasonable to take on an off road motorcycle ride. I figure a tank, a hose and a hand mask stored in my saddlebag will likely be the device I take but I'm wondering if anyone else has any experience with this and has a better mousetrap. An astronaut's helmet would be great but I can't afford NASA's rates. My ask is: Has anyone ever done something similar, what equipment did you utilize, and how did it work for you?