OMG! while doing research for packing light for a Italy trip in winter, these were recommended for the base layer because they are warm AND they don't smell after repeated wearing. I'm embarrassed to say I wore them (both top and bottom) for 8 days with lots of walking and they did NOT smell nor did they itch. I took another pair of thermals but didn't need them at all. I love these so much that I just bought the 'Siren Tank'.