Base Layers

When it comes to onesies, there is only one. The famed Monsie means no gaps, except when you need one. Non-stop, head to toe 100% merino love. You won't want to take it off.

High-performance base layer for year-round activity. Hike, run, ski, or ride. Lightweight and fully featured with strategically-placed mesh panels, this is a technical garment that delivers performance, with style.

A merino base layer for the mountain athlete, stacked with technical features: rolled shoulder seams so your pack straps won't rub, a zip garage to protect your chin and thumb loops to keep sleeves under control no matter how fast, high or far you go.

A high-performance merino base layer for mountain life. With thumb loops for sleeve security and a half zip up front for ventilation when you need it, it's the ultimate all-rounder.

High performance, no matter how you roll. Turn the plush merino neck up to keep out spindrift and rotor wash, or roll it down for classic ski chalet style.

Stay warm and stay out in the white room all day long. A super warm technical base layer with the added coverage of a high crew neck and the breathability of merino mesh underarm panels.

Ride hard in this relaxed fit hoody. With a powder-perfect SCUBA-style hood, a high neck for storm protection and plenty of room for layering up it's a performance garment you can hang loose in.

With the Mid 250 Zip T, you quit only when you want to. With next-to-skin Merino, it wicks and regulates core temp as a solo piece or smartly layers up when it gets chilly. First Layer fit with no-chafe.

A technical base layer that hits all the sweet spots. A classic crew design loaded with tech features: thumb loops and rolled shoulder seams so pack straps won't rub. Styled to be worn as a base layer or solo.

A high-performance merino base layer for mountain life. Soft, warm and highly breathable, the Cornice is all you need to go play outside.

The Christy full-length merino leggings disappear under your ski pants. So soft and stretchy, you'll barely notice they're there, yet you'll be warm and cozy, all winter long.

Cut to a shorter 3/4 length to banish in-boot bunching these 100% merino leggings feature the signature Mons Royale wide waistband to keep 'em up.

Smartwool's warmest base layer, the Merino 250 offers all the benefits of no-stink Merino like natural temperature regulation and moisture management. The boot top length delivers a perfect fit with performance boots.

Bunching be gone. The Alagna 3/4 legging stops at your boot top for a seamless sock-boot interface, so you can focus on your skiing and riding, not on keeping your socks wrinkle free.

A merino boxer with Hold Em fit for support made with light, breathable and odor-resistant Merino Air-Con. First on, last off.