Comfortable, considered and eco-friendly, celebrate the future of sustainable sportswear with ODLO’s Women’s ACTIVE WARM ECO Long-Sleeve base layer top.

Crafted from recycled polyester fibres to reduce its carbon footprint, this next generation base layer is ideal for alpine pursuits thanks to its warm and breathable qualities. 

Meet the new and improved Women's Merino 250 Base Layer Crew.

Smartwool have updated this 100% Merino wool fan-favorite with an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels its flatlock seam construction helps prevent chafing and increases your comfort level.

Add one of Smartwool's best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

An all-season favorite, the Classic All-Season Merino Base Layer Long Sleeve can be sported as a base layer in the fall or summer when it's time to go backpacking.

This base layer features Core Spun technology—which features Merino wrapped around a nylon core for added durability while still keeping the comfort of ultra-soft, responsibly sourced Merino next to skin.

Smartwool's Raglan sleeves eliminate shoulder seams for perfect comfort under a pack, and smooth merrow stitching wraps from side to front to keep you looking as good as you feel.