Mens Baselayers

The Smartwool Sport Fleece Wind Tight features a windproof front panel and DWR weather protection finish help you stay warm and protected from harsh conditions, while reflective elements help increase visibility in low-light situations—making these pants...

The Smartwool Classic All Season Bottom Tights work hard to keep you comfortable everywhere, from the ski lifts to the campsite. With an updated fit to improve functionality while enhancing aesthetics, these bottoms stay durable while 100% Merino next to...

The Smartwool Classic All Season 3/4 Bottom is game for whatever. With our Core Spun technology, we've wrapped lightweight Merino around a nylon core for added durability, while still keeping the comfort of ultra-soft, responsibly-sourced Merino next to...

The Smartwool Classic All Season Long Sleeve Shirt is game for whatever. With our Core Spun technology, we've wrapped lightweight Merino around a nylon core for added durability, while still keeping the comfort of ultra-soft, responsibly-sourced Merino...

The Smartwool Classic Thermal Bottom has been updated to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wool will help you keep your game at a high level for longer. And our heaviest weight wool fabric will help...

The Smartwool Classic Thermal 3/4 Bottom Tights will keep your ski and hiking boots free from bulk. 100% responsibly sourced Merino wool provides ultimate breathability and comfort, while a newly redesigned base layer pants fit helps reduce sag and...

The Smartwool Classic Thermal Rib Hoodie is a wardrobe essential for every explorer, but this men's top is fashionable enough to wear out on the town, too. The side seams wrap to the front for a slim, body-enhancing fit. And the ribbed hoodie...

The Smartwool Classic Thermal 1/4 Zip has an updated fit 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,...

The Smartwool Classic Thermal 1/4 Zip has an updated fit 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,...

The Smartwool Intraknit Thermal Max 1/4 Zip thermal layer brings a new dimension to active winter wear. With seamlessly integrated insulation and ventilation, perfectly articulated flex zones, and Merino comfort, it’ll be the first thing you grab when...

The Smartwool Classic Thermal Crew Shirt comes 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 our best base layers for...

The Armada Hoopler Baselayer Bottom is the premium primary layer for playing in the mountains. Moisture-wicking fabric made from a nylon, wool, spandex blend is constructed with chafe-free flat seams and four-way stretch for abrasion-free mobility. A UPF...