Quote Originally Posted by ny biker View Post
I once used a back patch, I think on my neck or shoulder. The adhesive bothered my skin. I wonder if they would stick to a base layer. I don't typically do long rides when it's cold but I can think of days when it would have helped to have something like this to warm up after a ride.
I put it over my baselayer and it worked fine. If you have a second, somewhat tight layer you can sandwich it in.