got to say these are my favorite shirts i own right now. I got several of them and they work well as base layer or by itself. its just comfortable and soft due to the thermal and having a hoodie on a thermal shirt is the best part about it. I wonder how i survived this long without such a simple yet genius idea. I bought several of them and have been wearing them nonstop. One thing i would recommend is that if you sometimes were large or extra large, depending on manufacturer, I would get the XL in this shirt. The large is fine, but i went back and got some XLs. Note, on the questions below i put better than expected for durability, but honestly i have not had them that long to tell for sure, but, so far they seem very durable. I won't know for sure until a year or so has passed.