This is Smartwool's Women's Classic Thermal Merino Base Layer Crew, updated with an enhanced fit, shoulder panels and raglan sleeves. GearJunkie named it Best Overall Base Layer for Women for 2025 to 2026, and it is 100% merino wool in Smartwool's warm 250 g/m2 weight.
A warm merino crew is the first layer we recommend for winter, and this one has earned its reputation.
Skiing, winter hiking and cold weather layering. Built for cold mornings on the lifts at Monarch Mountain.
