I'm looking at the possibility of investing in a heated vest, but I don't know if what I want exists... It seems as though there's two main types: 1) One that comes with a battery pack for hiking, etc. 2) One that comes designed to plug direct to the motorcycles battery supply. Just to be difficult - I want both. I was wondering if anyone has come across, or knows if it exists. (Effectively I'd like to be able to use my motorbikes power supply for long trips, but just use a battery for other non-motorcycle related activity) - and I don't want to buy two vests if one will do the job. Has anyone come across one that does both, or has someone macgyvered something similar in the past and can advise if it's possible? Also - on a separate note - just wondering for those who use heated vests what your thoughts are. A quick google search shows ones with multiple heat settings from 38c upwards beyond 50 degrees. I would have thought even 38 degrees reflecting back on ones self might be quite warm. Are they generally 'too hot' and only for cold frogs, or are they OK?