Tops

Smartwool's best selling, and warmest, baselayer, just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack.

We've updated the fit of our Women's Merino 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and one of our 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 better-than-ever Men's Merino 250 Base Layer Crew. We've updated this 100% Merino wool fan-favorite with new colors and a new fit to improve functionality while enhancing aesthetics. Shoulder panels eliminate top shoulder seams and a flatlock seam construction helps prevent chafing. Add one of our best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

With our Women’s Flux Pull-On baselayer, you can work hard and stay fresh, however arduous the ascent. The Thermic™ fleece construction of our new Women’s Flux Pull-On strikes exactly the right balance between mountain warmth and fast-wicking breathability. Built with strenuous multi-day climbing and trekking trips in mind, the Women’s Flux Pull-On can be worn either as a midweight baselayer for cold mountain work or as a lightweight fleece for milder conditions. The soft, single jersey knit fabric comes with a brushed back and flatlock seams for the ultimate in friction-free ‘second-skin’ comfort. It is also treated with Polygiene® odour-control treatment, for reliable freshness day after day, however many high-energy bursts and intermittent rest periods the lifecycle of the garment involves. With low-profile thumb loops, a quick-venting YKK® half-zip and an elevated collar with chin guard, our Women’s Flux Pull-On is the new benchmark for lightfooted layering versatility.

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. FIT: Slim LAYER: Base Layers BEST FOR: Snow Sports, Adventure BENEFITS: Comfort, Warm, Breathable, Lightweight FEATURES: Rib fabric provides stretch and comfort, center back length: 66.5cm/26¼", size M, Icebreaker tonal embroidered logo FABRIC WEIGHT: 175 Ultralight FABRIC: 100% Merino Wool

A versatile, go-anywhere base layer shirt made from breathable 100% merino wool jersey, the 200 Oasis Deluxe Long Sleeve Crewe is the evolution of our best-selling top.

A versatile women’s merino wool base layer shirt, the 200 Oasis Long Sleeve Crewe combines casual comfort with technical performance.

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.

A cold-weather women’s merino wool top, the Women’s Tech Long Sleeve Crewe is a midweight base layer for skiing, snowshoeing and other winter pursuits.

Icebreaker's go-to cold-conditions baselayer for deep powder days at the resort, quiet snowshoe hikes and other frigid pursuits, the 260 Tech Long Sleeve Half Zip is reliable, highly versatile and extremely comfortable. Made with heavyweight 100% merino wool jersey fabric with a zip-neck design for quick temperature adjustments, the Tech Crewe insulates, breathes and resists odors during active days or long trips away from home. Forward side seams and offset shoulder seams prevent chafing when you’re wearing a pack or moving fast. FIT: Slim LAYER: Base Layers BEST FOR: Snow Sports, Adventure BENEFITS: Comfort, Warm, Breathable, Odour Resistant, Moves with you FEATURES: Zip neck collar for temperature regulation, offset shoulder seams prevent pack rub, flatlock seams prevent chafing, forward side seams for comfort, underarm gusset for comfort and mobility, drop tail hem for added coverage, center back length: 69cm/27¼", size M, Icebreaker tonal embroidered logo FABRIC WEIGHT: 260 Midweight FABRIC: 100% Merino Wool

Our versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe Napasoq Lines is our best-selling base layer top.

Our midweight, 100% merino wool base layer top for optimal comfort and breathability in cold conditions, the 250 Vertex Long Sleeve Half Zip Crystalline offers a unique look and feel.

A soft and stretchy women’s cami updated with an improved fit and Icebreaker's Corespun fabric, the Siren Cami is sleek, stylish and ideal for everyday layering. Icebreaker's corespun fabric uses nylon fibers wrapped in merino wool for added strength and durability that retains next-to-skin softness, while the Siren’s flattering scoop neck and flattering fit offer feminine style. FIT: Slim LAYER: Underwear BEST FOR: Hike, Adventure BENEFITS: Comfort, Breathable, Durable, Odor Resistant FEATURES: Corespun fabric for enhanced durability, LYCRA® content for stretch and mobility, feminine scoop neck, adjustable strap construction, Icebreaker tonal screenprint logo FABRIC WEIGHT: 150 Ultralight FABRIC: 83% Merino Wool, 12% Nylon, 5% LYCRA® corespun PRODUCT WEIGHT: Medium = 100 g / 3.52 oz

A soft and stretchy women’s T-shirt with an updated fit and fabric that makes it even more comfortable, the Siren Long Sleeve Sweetheart is made with Icebreaker's corespun fabric, soft merino wool fibers wrapped around a nylon core for added strength and durability, while retaining next-to-skin softness. Ideal for year-round use whether traveling, hiking, or relaxing after a big day outside, the Siren Long Sleeve Sweetheart also features a flattering neckline and a fit that’s perfect for everyday comfort and layering. FIT: Slim LAYER: Underwear BEST FOR: Lifestyle, Adventure, Hike BENEFITS: Comfort, Breathable, Durable, Odor Resistant FEATURES: Corespun fabric for enhanced durability, LYCRA® content for stretch and mobility, soft v-neck, Icebreaker tonal screen print logo FABRIC WEIGHT: 150 Ultralight FABRIC: 83% Merino Wool, 12% Nylon, 5% LYCRA®

A soft and stretchy women’s tank top made with Icebreaker's corespun merino wool blend fabric for durable comfort, the Siren Tank features a feminine scoop neck and sleek design for everyday comfort and layering.

The Sprite Long Sleeve Crewe is a go-anywhere base layer top that features our soft and durable corespun fabric with a slim and stretchy fit.

A classic 1/2 zip base layer that will keep you warm & in style for years to come HH LIFA Light is a performance base layer, delivering lightweight insulation and comfort for everyday use and high performance activities. HH LIFA light constructed with 100% Lifa® fiber is quick-dry, very breathable and super lightweight. Continually perfected over the last 40 years, Lifa® Stay Warm technology is the unique ingredient of all Helly Hansen base layers. FEATURES: --lightweight insulation -100% Lifa® -Flat lock seams for max comfort --Natural stretch fabric -125g/m2 fabric

Your new favorite performance base layer super lightweight, breathable and quick-drying. HH LIFA Light is a performance base layer, delivering lightweight insulation and comfort for everyday use and high performance activities. HH LIFA Light is constructed with 100% Lifa® fibers that are quick-dry, extremely breathable, and super lightweight. Continually perfected over the last 40 years, Lifa® Stay Warm technology is the unique ingredient of all Helly Hansen base layers. FEATURES: -Light weight insulation -100% Lifa® -Flat lock seams for max comfort -Natural stretch fabric -125g/m2 fabric

This lightweight, zip-neck baselayer top offers superior stretch with a brushed inner face that regulates temperature through airflow. Its seamless construction eliminates friction against the skin.