I bought this for cycling on cold mornings.  It seems to be a bit warmer than my other lightweight synthetic base layers. It's never too cold here in SoCA, in a colder area you may want a heavy weight.  For the price it is a good value, and appears to be well made. Soft and supple, no itch here!  Being tall, 6'6'' I'd like the sleeve lenght to be a bit longer...But for the avg. size person I'm sure it's fine.