Tops

Smartwool has updated the fit of their Women's 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of their heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as keep you comfortable and temperature-regulated as you enjoy high-intensity skiing, hiking, running, and more.

Smartwool has updated the fit of their Women's 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of their heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as keep you comfortable and temperature-regulated as you enjoy high-intensity skiing, hiking, running, and more.

Smartwool has updated the fit of their Women's 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of their heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as keep you comfortable and temperature-regulated as you enjoy high-intensity skiing, hiking, running, and more.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Meet the new and improved Women's Merino 250 Base Layer Crew. Smartwool updated this 100% Merino wool fan favorite with new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction help prevent chafing and increase your comfort level. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Smartwool's Intraknit™ fabric is 3D-knit with Merino Sport yarns to be lighter weight with a cleaner finish. This women’s wool baselayer is perfect for a day of outdoor activity in cool to warm weather, because it will help keep your body dry and comfortable, and its fit won’t slow you down. For all your hiking, jogging, or other athletic adventures, this top will be there for you.

This minimalist-style crew is anything but insignificant. The Women's Intraknit™ Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather activities. With Merino Sport yarns and gender-specific ventilation perfectly placed to maximize thermoregulation and breathability in high-intensity activities, it helps amplify moisture management, movement, and comfort. When you're in our best base layers, you're ready for anything.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around polyester baselayer, with 50-100% recycled content. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Fresh durable odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

Whether worn alone on warm-weather hikes or as a next-to-skin layer for frigid days at the ski resort, the 175 Everyday Long Sleeve Crewe is a versatile year-round baselayer made with Icebreaker's 100% merino wool rib-knit fabric. With a flattering slim fit, and all-natural breathability and odor-resistance, this do-it-all top is perfect for any active adventure.

The benchmark against which all others are judged, the 200 Oasis Long Sleeve Crewe Ski Stripes features Icebreaker's most versatile merino jersey fabric for year-round layering performance across any activity. The all-over graphic print draws inspiration from the artistic imprint of ski tracks.

A versatile women’s merino wool go-anywhere base layer shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is Icebreaker's best-selling base layer top. The merino fibers help regulate your body temperature in all weather conditions and resists odors.

A versatile women’s merino wool go-anywhere base layer shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is Icebreaker's best-selling base layer top. The merino fibers help regulate your body temperature in all weather conditions and resists odors.

A versatile women’s merino wool base layer shirt with a zip-neck design for added ventilation and breathability, the 200 Oasis Long Sleeve Half Zip combines casual comfort with technical performance. Icebreaker Oasis base layers are what the company is famous for. These best-sellers are designed to contour the body and will easily flex with you, allowing maximum movement, whatever the activity. Not too heavy, not too light, the Oasis is made from 100% merino midweight jersey, making them your go to base layers for year-round layering and everyday comfort.

A versatile women’s merino wool base layer shirt with a zip-neck design for added ventilation and breathability, the 200 Oasis Long Sleeve Half Zip combines casual comfort with technical performance. Icebreaker Oasis base layers are what the company is famous for. These best-sellers are designed to contour the body and will easily flex with you, allowing maximum movement, whatever the activity. Not too heavy, not too light, our Oasis is made from 100% merino midweight jersey, making them your go to base layers for year-round layering and everyday comfort.

Their versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe Ski Stripes is their best-selling base layer top. The original graphic artwork by Damon Watters features a classic alpine powder run.

A midweight merino base layer top designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Long Sleeve Half Zip features 100% pure and natural merino wool.

A midweight merino base layer top designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Long Sleeve Crewe features 100% pure and natural merino wool.

A soft and stretchy tank top with a sleek, feminine design for everyday layering comfort, the Siren Tank features our durable and incredibly soft corespun merino wool blend fabric.

A unique 2-in-1 base layer half-zip to with a with a warm-breathable 100% merino wool exterior and a 100% LIFA® wicking interior. The LIFA® Merino Midweight collection is perfect for any type of activity in cold weather. Combined with a 100% merino wool layer with their proven LIFA® Stay Warm tech in a 2-layer construction. LIFA® Merino Midweight delivers all the breathable warmth of merino wool fibers, plus the unique moisture management properties of LIFA® fibers. Basics don’t need to be boring; we upgraded the top with cool graphics.