Tops

This multi-award-winning line of underwear is best suited for high performance high pulse sports. It has over many years now become the preferred underwear by many, chosen for its super-elastic construction, very light weight, and therefore an almost-naked feel when wearing. The open knit structure traps insulating air close to your skin, with supreme breathability, and minimal danger of overheating. Although this is a hydrophobic super fast drying fabric, the structure is made to absorb moisture off from your skin surface, which is the reason why it feels so comfortable and temperature regulating under intense activity.

Smartwool's year-round Merino 150 Base Layer Tank is up to any challenge—thanks to the body-temperature-regulating properties and breathability of Merino. With their Core Spun technology, they've wrapped Merino around a nylon core for added durability while still keeping the comfort of ultra-soft, responsibly sourced Merino next to skin. Smooth merrow stitching wraps from side to front for a feminine look. Now you're ready to conquer the day.

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.

Smartwool has updated the fit of their Women's Merino 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.

Your next-to-skin layers should always be extra comfy, which is why Smartwool takes pride in the quality of their underwear. Their Women's Seamless Racerback Bra is built with a seamlessly knit Merino wool interior for comfort combined with an outer designed for support. And engineered knit cups provide shape and lift. Wear it on your next adventure or on leisure days at home.

Smartwool's Women's Thermal Merino High Neck Top is a game-changer and wardrobe-maker. Why? Because it's made with 100% ZQ-certified Merino wool! That means it's warm, cozy, breathable, and odor-resistant. So you can get out and do what you love with comfort and confidence.

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.

Icebreaker's lightest base layer top that’s perfect for active adventure and everyday training, the 150 Zone Long Sleeve Crewe features 150gm jersey corespun with LYCRA® to maximize flexibility. The merino mesh has been strategically place for increased ventilation.

Icebreaker's lightest base layer top that’s perfect for active adventure and everyday training, the 150 Zone Long Sleeve Crewe features 150gm jersey corespun with LYCRA® to maximize flexibility. The merino mesh has been strategically place for increased ventilation.

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 our 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, 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.

Their versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe Ski Tracks is their best-selling base layer top.

An incredibly warm merino base layer with a unique jacquard pattern, the 250 Vertex Long Sleeve Crewe Alpine Geo is a go-to piece for winter layering—ideal for skiing, snowshoeing and other cold-weather pursuits. The all-over graphic print draws inspiration from the fractal structure of a snowflake.

An incredibly warm merino base layer with a unique jacquard pattern, the 250 Vertex Long Sleeve Half Zip Alpine Geo is a go-to piece for winter layering—ideal for skiing, snowshoeing and other cold-weather pursuits. The all-over graphic print draws inspiration from the fractal structure of a snowflake.

An incredibly warm merino base layer with a unique jacquard pattern, the 250 Vertex Long Sleeve Crewe Fractured Landscapes is a go-to piece for winter layering—ideal for skiing, snowshoeing and other cold-weather pursuits. The original jacquard-inspired print artwork by Nathan Dunn draws inspiration from the natural cracks and angular shapes found in rock formations.

A warmer, midweight version of their best-selling Oasis, the 260 Tech Long Sleeve Half Zip is a go-to piece for winter layering, made with 100% merino wool. With the soft merino fibers, they will help regulate the body's temperature, no matter weather conditions while also resisting odors.

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.

A soft merino-blend top made with Icebreaker's lightweight Cool-Lite™ jersey fabric, the Sphere II Tank provides natural breathability, odor resistance and comfort.

Your new favorite performance base layer is superlight, breathable and quick-dry. Any season, any activity HH LIFA® base layers keep you warm, dry and comfortable. This game-changing, hydrophobic LIFA® yarn technology delivers light insulation and wicking moisture management. Use it for everyday wear or high-performance activities. They've been excelling at HH® LIFA® base layer technology for 40 years. That’s why their base layers are the go-to choice for professional athletes.

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.

A unique 2-in-1 base layer crew with a with a warm-breathable 100% merino wool exterior and a 100% LIFA® wicking interior. The versatile LIFA® Merino crew adapts to any type of cold weather. Combined with a 100% merino wool layer with their proven LIFA® Stay Warm Technology in a fitted 2-layer construction. LIFA® Merino Midweight Crew Base Layer delivers all the breathable warmth of merino wool fibers, plus the unique moisture management properties of LIFA® fibers.

The versatile LIFA® Merino crew keeps you warm and dry during any type of cold weather activity, so you can get outside and stay outside longer. Combined with a 100% merino wool layer with their proven LIFA® fiber technology in a 2-layer construction. This unique performance LIFA® Merino fabric delivers all the breathable warmth of merino wool fibers, plus the unique moisture management properties of LIFA® fibers. It excels at technical performance. It’s also super-soft and comfortable.

A unique 2-in-1 base layer half-zip 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 on this ½ zip. LIFA® Merino Midweight Base Layer delivers all the breathable warmth of merino wool fibers, plus the unique moisture management properties of LIFA® fibers.