I have purchased all sorts of long underwear (and paid top $$$) for them. I decided to give these a try because how can you not lose for under $10. Well, they are great! I live in a very cold part of the USA and am 77 years old. When the weather becomes unbearable to me, I simply put Cuddl Duds' micro long sleeve shirt next to my skin and then this one. BTW, this has a little 'hole' to put your finger in while you are pulling on the top you plan on wearing for the rest of the world. In addition, I use them as a pj top.