The CapoForma Arm Skin is great for what it is - quite thin arm protection. I actually bought them with UV protection in mind, but you can do this with a long sleeve jersey. They are perfect though for descents when it is just cold enough to catch a chill or that mid 50 - low 60 temp range. If you are looking for a cold weather solution, look elsewhere. That said, I really like them, they are comfortable and stylish and work as advertised. Go one size smaller than what you would normally order if you have a thin build.