Base Layer

We've updated the fit of our Women's Merino 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest...

Our best-selling base layer bottoms made from soft and breathable 100% merino wool jersey, the 200 Oasis Leggings are the perfect foundation for yo...

With a gusseted no-bunch crotch and low-profile elastic waistband, the CORE Lightweight Bottom provides just enough warmth for when temps dip and d...

The lightweight, breathable, stretch fabric you want with a camo design. Quick-dry and antimicrobial, this boxer brief includes the signature MK in...

When your outdoor excursions need some extra warmth, pull on a pair of these women's fleece wind tights. Soft Merino is next to your skin for comfo...

The super-comfy, compressive Bounce-B-Gone Bra features athlete-inspired venting and provides all the support you could ever need during energetic ...

Our new and improved Women's Merino 250 Base Layer 1/4 Zip is here to bring you a better feeling, better performing, and better-looking garment. As...

Our Women's Merino 250 Base Layer Pattern Crew has been elevated to help bring you more comfort to conquer cold weather days and activities. We've ...

Our Men's Merino 250 Base Layer Colorblock Crew features 100% responsibly sourced Merino wool made with an interlock knit for enhanced comfort, bre...

We've updated our Men's Merino 250 Base Layer Bottom to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wo...

We've updated the fit of our Men's Merino 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest b...

Meet the better-than-ever Men's Merino 250 Base Layer Crew. We've updated this 100% Merino wool fan-favorite with new colors and a new fit to impro...

This minimalist-style crew is anything but insignificant. It is a lightweight, super-moveable top, perfect for all of your sweatiest cold-weather a...

When you need the performance of Merino without the bulk, pull on a pair of our Intraknit Merino 200 Bottoms. 3D-knit articulation adds an enhanced...

Change can be a good thing. We've improved the fit on our 100% Merino bottoms with new side seams and a curved seam in the back to help provide a s...

We've reduced the bulk in these Intraknit Merino 250 bottoms, bringing a new dimension to our active winter wear. Targeted insulation and ventilati...

With a new fit that is designed to reduce excess fabric, our Women's Merino 250 Baselayer Pattern Bottom will help keep you looking good, while fee...

An all-season favorite, wear the Merino 150 Long Sleeve as a baselayer in fall or as a single layer when summer backpacking calls. Featuring Core S...

The War Department called and we answered. Reliable products for professional and personal use. Like the PMAG. And this athletic fit cotton-poly bl...

Soft and stretchy merino wool underwear with a modern slim fit, the Siren Bikini features our corespun fabric that's incredibly soft and durable.

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

Heavyweight men's merino wool base layer bottoms for highly aerobic days in cold weather, the 260 Zone Leggings feature zoned ventilation panels fo...

Classic boxer briefs made with a stretchy slim fit and our corespun fabric, the Anatomica Boxers are supportive and comfortable for daily life and ...

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.