I have a couple of Odlos, I like their underwear but the baselayer products I bought are skin tight and after using them a few times I now know that I'm not keen on skin tight clothing. The shop I bought them from claimed that my sizing for Odlo was Small, I couldn't even get them over my head! I tried Medium, managed to drag them over my body but they were still too tight so I tried Large. At the time they seemed to be the right fit but now I've used them a few times they certainly do not make me feel good. Looking back, I should have tried the XL or even XXL. I don't mind a baselayer fitting comfortably but sorry, skin tight is not for me! We live and learn!