Underwear

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.

Two-layer construction MERINO BLEND base layer bottom. Warm on the outside and soft on the inside. The covered wide elastic waistband makes sure that it stays comfortably in place. MULTI style for women.

MERINO BLEND crew neck base layer top. Our Merino wool is certified mulesed-free. Women MULTI style.

MERINO BLEND base layer zip top. Soft on the inside, warm on the outside. Women MULTI style.

All-purpose, year-round baselayer bottoms made with super-soft, 100% pure merino wool, the 175 Everyday Leggings are perfect for everything from summer nights in camp to frigid days at the ski resort. Featuring a rib-knit fabric for premium comfort and stretch and a contoured slim fit for smooth layering and moisture wicking performance, the Everyday Leggings are ready for any active day outside. INSEAM: Medium = 72.8cm / 28¾" FIT: Slim LAYER: Base Layers BEST FOR: Snow Sports, Adventure BENEFITS: Comfort, Warm, Breathable, Lightweight FEATURES: Rib fabric provides stretch and comfort, Icebreaker branded brushed elastic waistband, inseam: 72.8cm/28¾", size M FABRIC WEIGHT: 175 Ultralight FABRIC: 100% Merino Wool

Midweight merino leggings with a capri-length design for use with ski boots and winter footwear, the breathable, odor-resistant 200 Oasis Legless base layer bottoms are made from 100% merino wool.

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

Midweight women’s merino wool base layer leggings perfect for skiing, winter hiking or cold-weather layering, the 260 Tech Leggings are technical long underwear bottoms that feature a gusseted construction and breathable, odor-resistant fabric.

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 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.

Midweight merino wool baselayer bottoms for cold conditions, the 250 Vertex Leggings Drift combine the warm breathable performance of merino wool with a comfortable, gusseted fit.

Soft and stretchy women’s bikini underwear with a modern slim fit, the Siren Bikini features Icebreaker's corespun merino wool blend and provides enough coverage with the best possible fit and shape for go-to, everyday comfort.

Featuring a slim, modern fit and Icebreaker's corespun merino wool fabric for durable comfort, the Siren Bra offers the support you need with a soft, sleek and stretchy construction.

An ultra-comfy underwear bottom for everyday wear, the Siren Hipkini is made from Icebreaker's ultra-lightweight corespun merino jersey with a touch of LYCRA® for stretch.

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.

Lightweight women’s hot pants made with super-soft merino wool jersey corespun fabric for durable comfort, the Sprite Hot Pants feature a flattering slim fit and offset seams for all-day comfort during active or casual use.

A soft and supportive women’s racerback bra made with merino wool corespun fabric for durable performance, the Sprite Racerback Bra allows for full range of motion and all-day comfort.

Icebreaker's technical, cold-weather base layer top for highly aerobic days, the 260 Zone Long Sleeve Crewe features zoned ventilation panels for active temperature regulation and ample breathability.

Icebreaker's technical, cold-weather base layer top for highly aerobic days, the 260 Zone Long Sleeve Half Zip features zoned ventilation panels for active temperature regulation and ample breathability.

Technical, cold-weather base layer bottoms for highly aerobic days, the 260 Zone Leggings feature zoned ventilation panels for active temperature regulation and ample breathability.

A 2-layer construction with flatlock seams, 100% wool exterior and the unique properties of technical Lifa® technology HH LIFA MERINO is our warmest base layer, perfect for any type of activity in cold weather. A unique 2-in-1 base layer with 100% merino wool combined with Lifa® Stay Warm Technology in a 2 layer construction. HH LIFA MERINO delivers all the great benefits of merino wool fibers plus the unique properties of technical LIFA(r) fibers.

A unique 2-in-1 base layer with 100% merino wool exterior and 100% LIFA® Stay Warm Technology brushed interior LIFA® MERINO HEAVYWEIGHT is our warmest base layer, perfect for any type of activity in cold weather. A unique 2-in-1 base layer with 100% merino wool combined with a brushed LIFA® Stay Warm Technology in a 2 layer construction. LIFA® Merino HEAVYWEIGHT delivers all the great benefits of merino wool fibers plus the unique properties of technical LIFA® fibers. Fiber Content: 65% Merino Wool, 35% Polypropylene

A unique 2-in-1 base layer with 100% merino wool exterior and 100% LIFA® Stay Warm Technology interior LIFA® MERINO MIDWEIGHT is perfect for any type of activity in cold weather. A unique 2-in-1 base layer with 100% merino wool combined with LIFA® Stay Warm Technology in a 2 layer construction. LIFA® Merino MIDWEIGHT delivers all the great benefits of merino wool fibers plus the unique properties of technical LIFA® fibers. Fiber Content: 57% Merino Wool, 43% Polypropylene

A unique 2-in-1 base layer with 100% merino wool exterior and 100% LIFA® Stay Warm Technology interior LIFA® MERINO MIDWEIGHT is perfect for any type of activity in cold weather. A unique 2-in-1 base layer with 100% merino wool combined with LIFA® Stay Warm Technology in a 2 layer construction. LIFA® Merino MIDWEIGHT delivers all the great benefits of merino wool fibers plus the unique properties of technical LIFA® fibers. Fiber Content: 57% Merino Wool, 43% Polypropylene

LIFA® MERINO is the warmest baselayer, perfect for any type of activity in cold weather. A unique 2-in-1 baselayer with 100% merino wool combined with Lifa® Stay Warm Technology in a 2 layer construction. HH Lifa® MERINO delivers all the great benefits of merino wool fibers plus the unique properties of technical Lifa(r) fibers. FEATURES: -100% Merino wool exterior combined with Lifa® technology interior -Non itch -Flat lock seams -215g/m2 fabric