I’m looking for a base layer that helps keep me warm when the weather is cool, but helps to keep me cool while it is warm. The only thing is that I am not at all knowledgeable about what all is available. Also, I’m really wanting more of a long-john style base layer that is all one piece.
I personally am fan of the base layer thermo clothing or Revolution Race. I would not recommend it in the warm summer, just a synthetic shirt will do then, but when it is a bit colder or even very cold, it works perfectly. I use it from early autumn all the way up to late spring. It is a Swedish brand, but I think they ship worldwide.