Merino Wool

Smartwool has updated the fit of our Men'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 help keep you comfortable and temperature-regulated as you enjoy high-intensity skiing, hiking, running, and more.

Made with a blend of responsibly sourced Merino wool and polyester, Smartwool's Men’s Merino Sport Hoodie offers temperature regulation, moisture management, odor control, breathability, and quick dry times. Plus, it’s designed for comfort, with flatlock seams to help prevent chafing and a fit that gives you the freedom to move. For those times when you might break a sweat even when it’s cool—did someone say a fall hike or early spring mountain bike ride?—this hoodie will leave you feeling comfortable and fresh.

Any day outside is a good day—and it’s made even better with the right tee to set the tone. Smarrtwool's Men's Active Ultralite Graphic Short Sleeve Tee is crafted with comfort in mind: with a super-soft blend of Merino wool and TENCEL Lyocell fibers, this performance fabric will help keep you cool, even if you’re building up that sweat. Plus, it has offset shoulder and side seams that help reduce chafing, as well as a body-skimming fit that moves with you. And if your outdoor adventure goes into the evening, it’s got reflective elements that can help you be seen. For your next day out, be sure this tee is part of your gear.

The athletic fit of Smartwool's Men’s Merino Sport Ultralite Long Sleeve complements the movements of your body. With comfort features like offset shoulder and side seams to help minimize chafing, this very light and soft tee is made with a blend of ZQ-certified Merino wool with TENCEL™ Lyocell fibers, so it helps you feel cool even as your activity intensifies. Plus, it’s designed with reflective elements for low-light conditions, so this tee is great as a standalone for early-evening runs or as a baselayer for your next cool-weather adventure.

Simple but practical, Smartwool's Men’s Sport Ultralite Short Sleeve tee is soft yet functional, for all-day comfort and utility. Its super-light performance fabric—a blend of ZQ-certified Merino wool with TENCEL™ Lyocell fibers, this performance fabric will help keep you cool when your intensity amps up, and its design helps minimize chafing. Plus, it’s odor-resistant, breathable, and temperature-regulating, all helpful features when you work up a sweat. With a body-hugging athletic fit, this tee will keep you looking and feeling good, whether you’re pumping iron at the gym or hitting the trail for a hike.

When the weather gets warm, your arms might want some air. That’s where a good, high-performance tank comes in. Smartwool's Men’s Merino Sport Ultralite Tank brings all-day softness and functionality. It’s made with a blend of ZQ-certified Merino wool and TENCEL™ Lyocell fibers, so when you break a sweat, it's got your back with breathability, odor resistance, temperature regulation, and quick dry times. And with other thoughtful design features like seams made to help prevent chafing and reflective elements for dim-light conditions, this tank is prepped for the long haul, whether you’re playing pickup basketball or rowing crew on the river.

Comfort starts with the clothes you wear. That’s why Smartwool's Men's Active Ultralite Tech Tee is a great choice for your next outdoor adventure. Its regular fit gives you room to move, while its flatlock seam construction and offset shoulder seams help reduce chafing. But best of all, it’s made with a combination of Merino wool and recycled polyester, to help manage moisture, regulate temperature, and increase dry time when you start to sweat. Great for a hike in the hills or a jog in the neighborhood, this tee will help you start and stay comfy.

Designed for comfort, with offset shoulder seams, Merino wool for temperature regulation and odor control, and flatlock seams to minimize chafing, Smartwool's Companion Trek Graphic Short Sleeve Tee also has the quick dry times of recycled polyester, so even as you notch the intensity up, sweat and heat won’t bring you down. So grab this tee and get out there for anything from a day hike to 5K and beyond.

Smartwool's Dawn Rise Graphic Short Sleeve Tee features flatlock seams to prevent chafing as well as offset shoulder seams to up the upper-body comfort level. Plus, it offers a blend of Merino wool and recycled polyester, so you know you’ll get odor resistance, temperature regulation, moisture management, and quick dry times. Whether you’re taking an afternoon promenade about town or getting into a serious hike in the hills, this tee will be the perfect on-body accompaniment to keep you cool and comfy while you do it.

This responsibly sourced Merino wool men’s tee is designed with the mountain biker in mind. Its regular fit allows for unrestrained movement, it’s designed with reflective elements for when you’re riding in dim light, and it offers a longer back hem for extra coverage. Plus, it’s made with a blend of Merino wool and Tencel™ performance fabric, which helps with breathability, moisture management, and odor resistance, so you’ll still feel cool, even when your ride heats up. And with its understated yet classy block-stripe pattern, you’ll look good the whole time you shred your next trail.

Designed with the mountain biker in mind, Smartwool's Men’s Mountain Bike Long Sleeve Jersey combines comfort with style. With a fit cut to give you room to move, a blend of responsibly sourced Merino wool and polyester for temperature regulation and quick dry times, back vents for breathability, reflective elements for low-light riding, and a longer back hem for extra riding coverage, this jersey will feel good, look good, and perform great. And because it’s odor-resistant, you can put it on for your next gnarly sesh and not be afraid to leave it on for the après-ride drinks with the crew.

Plain old cotton tees don’t hold a candle to Smartwool's Mountain Horizon Graphic Short Sleeve Tee. It’s made with a blend of responsibly sourced Merino wool and recycled polyester, so you know this shirt is soft, odor-resistant, temperature-regulating, and durable. Plus, it has additional comfort details like flatlock and offset seams that help reduce chafing. And the mountain graphic on the front adds just the right pizzazz to take you from the trailhead to errands around town and back again.

This shirt is a Saturday-afternoon classic. But why only wear it on the weekend? With fabric blended of responsibly sourced Merino wool and recycled polyester, flatlock and offset seams that help reduce chafing, and quick dry times that help alleviate that sticky-wet sweat, Smartwool's Mountain Trail Graphic Short Sleeve Tee brings the comfort for days. Whether you wear it for casual day at the office, an afternoon out about town, or just relaxing on the couch, this tee will remind you that weekdays are for comfort too.

For warm-weather biking or as a good first layer, Smartwool's Men’s Active Ultralite Mountain Biking Short Sleeve Tee is purpose-built for the avid rider. It’s super light and super soft, and its blend of ZQ-certified Merino wool with TENCEL™ fibers performance fabric will help with odor control, temperature regulation, and dry times. Plus, it offers thoughtful design elements like offset shoulder and side seams, a longer back hem, and reflective elements for low-light conditions. For your next ride, make this tee part of your go-to gear.

A classic, all-purpose base layer T-shirt made with soft and breathable 100% merino wool fabric, the 175 Everyday Short Sleeve Crewe is as versatile as it is comfortable.

A versatile 100% merino wool base layer top with a classic zip-neck design, the 200 Oasis Long Sleeve Half Zip combines casual comfort with technical performance.

A versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Short Sleeve Crewe is our best-selling base layer top. Fibers that regulates the body temperature in all weather conditions, along with resisting odors; gusseted underarms for mobility and comfort

Icebreaker's versatile baselayer design in a midweight, zip-neck design, the updated 260 Tech Long Sleeve Half Zip is a go-to foundation for cold-weather layering, whether you’re scoring a powder day at the resort or enjoying a quiet hike through the woods. Made from 100% merino wool jersey fabric with a deep front zip that quickly dumps excess heat, the Tech LS Crewe insulates next-to-skin, breathes to regulate temperature and resists odors on active days or long stints away from home. Gusseted underarms, forward side seams and offset shoulder seams improve range of motion and prevent chafing when you’re moving fast or wearing a pack.

Icebreaker's versatile baselayer design in a midweight, zip-neck design, the updated 260 Tech Long Sleeve Half Zip is a go-to foundation for cold-weather layering, whether you’re scoring a powder day at the resort or enjoying a quiet hike through the woods. Made from 100% merino wool jersey fabric with a deep front zip that quickly dumps excess heat, the Tech LS Crewe insulates next-to-skin, breathes to regulate temperature and resists odors on active days or long stints away from home. Gusseted underarms, forward side seams and offset shoulder seams improve range of motion and prevent chafing when you’re moving fast or wearing a pack.

A soft, stretchy base layer T-shirt for active layering and everyday comfort, the slim-fit Anatomica Short Sleeve Crewe features an ultralight 150gm merino wool corespun fabric. Anatomica tees fit tighter than other tees in Icebreaker's range and generally have a wider neck opening, just size up if you like a looser fit.

Icebreaker's versatile Tech Tee that provides comfort, breathability and odor-resistance for any adventure you can think of, the Tech Lite II Short Sleeve Tee Trailhead features 100% merino for all-natural performance. The original artwork features a retro-inspired print of a trail in Queenstown, New Zealand.

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

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

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

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

Icebreaker's versatile tech tee that provides comfort, breathability and natural odour-resistance for any adventure you can think of, the Tech Lite II Short Sleeve Tee Cadence Paths features 100% merino for all-natural performance. The original artwork by Damon Watters draws inspiration from the flowing lines of life on two wheels. Free of plastic microfibres and petrochemical-based synthetics, this product is made with 100% pure merino fibres that were hand-picked for strength and softness to create a luxurious fabric that naturally breathes and resists odours. Merino wool fibre is naturally renewable, recyclable and biodegradable under certain conditions.

A versatile tech tee that provides comfort, breathability and natural odour-resistance for any adventure you can think of, the Tech Lite II Short Sleeve Tee Icebreaker features 100% merino for all-natural performance. The original artwork captures icebreaker's deep roots in mountain skylines around the world. Free of plastic microfibres and petrochemical-based synthetics, this product is made with 100% pure merino fibres that were hand-picked for strength and softness to create a luxurious fabric that naturally breathes and resists odours. Merino wool fibre is naturally renewable, recyclable and biodegradable under certain conditions.

A versatile tech tee that provides comfort, breathability and natural odour-resistance for any adventure you can think of, the Tech Lite II Short Sleeve Tee Polar Paddle features 100% merino for all-natural performance. The original artwork by Damon Watters features a whimsical illustration of a paddleboarding Polar bear, in search of the perfect camp spot. Free of plastic microfibres and petrochemical-based synthetics, this product is made with 100% pure merino fibres that were hand-picked for strength and softness to create a luxurious fabric that naturally breathes and resists odours. Merino wool fibre is naturally renewable, recyclable and biodegradable under certain conditions.

The Tech Lite II Short Sleeve Tee Nature Sprint is Icebreaker’s most versatile Merino Tech Tee, providing stretch, comfort, breathability and odour-resistance for just about any adventure you can think of. The Tech Lite features lightweight, breathable and Odour-Resistant 150gm Jersey Fabric, made with 100% pure Merino Wool.

Icebreaker's most versatile merino wool tech tee, the Tech Lite II Short Sleeve Tee provides stretch, comfort, breathability and odor-resistance for just about any adventure you can think of. With the soft merino fibers, they will help regulate the body's temperature, no matter weather conditions while also resisting odors.