Ideal for spring skiing in a sweater without a coat for 32+ days. I bought a size up in another review and it's just right for wearing a base layer underneath. Seems to be a quality build. So far very satisfied.

Used as a base layer under the referee jersey in cold weather. Works well. It's not a thick, highly insulating layer, but it blocks the wind. In really cold weather, you'll need another layer of insulation.

I am 6 feet 161 pounds. He usually wears a US size M tank top. This base layer is very form fitting. Size L fits me but the sleeves are a bit long.

Fleece tank over top. Do not confuse this base coat with another thinner Gore base coat. The only difference between the two is that this thicker version has a collar while the summer/spring underwear has no collar. Both have a wind resistant material that really makes this base layer better than others. Too bad Gore doesn't make a winter base coat for cold temperatures. I still go to Rahpa for a really warm base layer for cold weather. Rapha's winter baselayer includes a turtleneck and…