A versatile, body-mapped zip-neck top that’s ideal for high-intensity adventures, the Merino Blend 125 ZoneKnit™Long Sleeve Half Zip features our Cool-Lite™ jersey, which blends TENCEL™ Lyocell and merino wool to naturally keep you cool.

The redesigned Race 2.0 Midlayer Half-Zip is a sporty essential for seamless layering. Quick-drying and antibacterial, it ensures enduring freshness during intense ski runs. Upgraded with thumbholes and VaporTemp technology that captures and spreads body heat while wicking moisture away. This versatile midlayer doubles as a baselayer with its soft hand feel. Elevate your winter performance with the Race 2.0 Midlayer Half-Zip.

The Men's Exchange III Base layer Set. Crafted from polyester thermal tech fabric with our advanced Q-Wic+ technology, these men's thermal leggings and top ensure you stay fresh throughout your workout by efficiently wicking away sweat, accelerating drying and repelling odour-causing bacteria. Our men's thermal set recirculates heat from your body, providing uncompromised warmth even in the chilliest environments. Featuring a soft brushed thermal fabric, the long-sleeved thermal top and leggings ensure a cosy and comfortable feel against your skin, making it ideal for layering under outer garments during outdoor activities. Whether you're hitting the slopes or going for a winter hike, our men's thermal set is an essential addition to your adventure wardrobe.

We've updated the fit of our Men's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our 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 help keep you comfortable and temperature-regulated as you enjoy high-intensity skiing, hiking, running, and more.

An incredibly warm merino wool base layer with a unique jacquard pattern, the Merino 250 Vertex Long Sleeve Half Zip Snow Guide is a go-to piece for winter layering—ideal for skiing, snowshoeing and other cold-weather pursuits. The all-over pattern features a textured design reminiscent of ski tracks, hiking trails, and contour lines on a topographical map.

A warmer, midweight version of our best-selling Oasis, the 260 Tech Long Sleeve Half Zip is a go-to piece for winter layering, made with 100% merino wool.

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

The benchmark against which all others are judged, the Merino 200 Oasis Long Sleeve Crewe Ruapehu Round features our most versatile merino wool jersey fabric for year-round layering performance across any activity. The tee's original artwork draws inspiration from a popular New Zealand trail that showcases the volcanic wonder of Mt. Ruapehu.

Icebreaker's versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is our best-selling base layer top. This ultra-light shirt is designed to keep you cool in the summer and warm in the winter, offering the perfect temperature regulation.

Icebreaker's versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is our best-selling base layer top. This ultra-light shirt is designed to keep you cool in the summer and warm in the winter, offering the perfect temperature regulation.

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

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® Mint odor control keeps things fresh. Made in a Fair Trade Certified™ factory.

The benchmark against which all others are judged, the Merino 200 Oasis Long Sleeve Half Zip features our most versatile merino wool jersey fabric for year-round layering performance across any activity.

ODLO’s ACTIVE X-WARM ECO Long-Sleeve base layer top for men is a superb multifunctional base layer that you can’t do without this winter.

The ACTIVE X-WARM range has been designed to provide advanced insulation when temperatures plummet, using soft pads to give additional warmth where you need it most, while excellent moisture management properties guarantee you stay warm and dry at all times. 

A warm, breathable and soft-touch design, this men’s base layer also features ZeroScent technology that naturally reduces odour build-up thanks to its anti-microbial properties.

Designed to meet the demands of alpine pursuits, ergonomically constructed raglan seams maximise your range of motion whilst the ribbed cuffs create a stronger barrier between the elements. A lightweight design with a comfortable crew neck collar means you can make every layer count with this ACTIVE WARM ECO base layer from ODLO.

Signalling the next step in sustainable sportswear, ODLO’s Men’s ACTIVE WARM ECO Half-Zip Turtleneck base layer top is an essential part of your winter arsenal.

Crafted from 100 percent recycled fibres, this versatile men’s base layer has been crafted to keep you warm, dry and comfortable whilst enjoying winter pursuits. 

The Men's Zone Base Layer Set. Dare 2b's best-selling base layers made with thermo-regulating BODY knit-fabric.

Sweat-wicking and seamless - so comfy you will want to wear them every day. These layers regulate your core temperature by keeping you cool when you're sweating and warm when your cold.

The soft-touch, stretch fabric offers full range of motion and features in-built odour control to keep you feeling fresher for longer. Quick-drying and form-fitting.

Smartwool have updated the fit of their Men's Classic Thermal Merino 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 help keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running, and more.

Smartwool have updated their Men's Merino 250 Base Layers Bottom to bring you better fitting, more functional tights.

The technical benefits of 100% Merino wool will help you keep your game at a high level for longer.

And Smartwool's heaviest weight wool fabric will help keep you warm and comfortable as you ski, run, and hike the day away.

Meet the better-than-ever Men's Classic Thermal Merino Base Layer Crew.

Smartwool have updated this 100% Merino wool fan-favorite with 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 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.

Spring skiing or summer camping?

The Classic All-Season Merino Base Layer Long Sleeve is game for either. With Smartwool's Core Spun technology, they've wrapped lightweight Merino around a nylon core for added durability, while still keeping the comfort of ultra-soft, responsibly-sourced Merino next to skin.

Smartwool added smooth flatlock seams to help minimize chafing and offset shoulder and side seams to lie smoothly beneath pack straps.  No matter the season or the activity, this base layer is made for it.

A warmer, midweight version of our best-selling Oasis, the 260 Tech Long Sleeve Crewe is a go-to piece for winter layering, made with 100% merino wool.

Icebreaker's versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is our best-selling base layer top. This ultra-light shirt is designed to keep you cool in the summer and warm in the winter, offering the perfect temperature regulation.

Lifa® Max is dual layer 100% Lifa® that ensures sweat is transported away from your skin while the dual layer gives you the warmth. This is our warmest base layer and is built for low to medium activity.