Thermals

Base Fabric: 88% Polyester, 12%Elastane 2-way Stretch Jersey KnitSecondary Fabric: 100% Polyester100wt FleeceFit: Regular Size Guide

Whether worn as a winter base layer, or a cool-weather pant, the UltraGear Bottom has the versatility to handle any adventure. We created it with elastane and double-knit fleece keeps...

Move freely and stay warm. This stretch crew delivers breathable comfort, moisture control, and a streamlined fit for active days in the cold. Designed for high-output cold-weather performance, the Men's...

The Women's Active Stretch Crewneck is a versatile long-sleeve base layer designed to keep you comfortable and dry during any activity. Its moisture-wicking fabric moves with you, providing a snug...

The Women's Active Stretch Tight combines moisture-wicking technology with thermal warmth to keep you comfortable and dry. Its stretchy, close-fitting fabric moves with your body, providing support and flexibility for...

The Youth Active Stretch Bottom provides a warm, flexible thermal base layer designed for active kids. Its stretchy fabric moves with your child, offering comfort and insulation during outdoor adventures...

Keep your young adventurer warm and comfortable with the Youth Active Stretch Crew. Designed as a thermal base layer, it offers excellent insulation while allowing full freedom of movement. Its...

We've updated the fit of our Men's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and...