Of course we must layer up in the cold to maintain core body temperature, but the extremities will still struggle, particularly at the end of the day.
I use chemical heat packs for the hands as a simple fool-proof solution.
Here are some photos of how I use them:
instagram.com/p/Cnl1bPvLitg...
I buy them on the internet in bulk, and won't promote any particular brand as these are the only ones I've tried. There are others similar
Any tips/improvements?
Best wishes to all,
Ernest
P.S. My breakpoint for Reynaud's attacks was about 10deg. Something strange happened last year though. I spent the year off road tarmac cycling once a week (until my car broke. . . ). The cycling seemed to do nothing much for aerobic fitness which was a disappointment, but it I think lowered my Reynaud's breakpoint down from 10deg down to 8deg when on foot. Most of the time then I can now avoid heatpacks in the shoes when walking. Probably though use the feet version of heatpacks when on the bike (just in case . . .)