I found that wearing some of the stuff I had was not keeping me warm and I like a light compression when I run. I looked around and found a company called Proskins. It's a UK based company (www.proskinus.com) but they have a US site as well. In any event I've been using them now in the mornings when it's coldest and it seems to be really working. The product claims to have caffiene, retinol, vitamin E, Aloe and fatty acids built into the material. It's all made and manufactued in the UK. My question is has anyone else used these, did they work to keep warm for them and how long did they last. It's seems like the effects of the infused potions feel great and help to give me a little boost. Or am I crazy! Ha!