Fleece & Midlayer

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 improve functionality while enhancing aesthetics. Shoulder panels eliminate top shoulder seams, and a flatlock seam construction helps prevent chafing. Add one of their best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

Zip up in cold weather and zip down when it warms up in this year-round favorite, The Men's Classic All-Season Merino Base Layer 1/4 Zip. This top uses All-Season-weight Merino fabric wrapped around a nylon core to increase durability, while still keeping the 100% soft, Merino wool you love next to skin. Side seams help minimize chafing while wearing a pack and offer a body-enhancing fit. Select colorways feature a more responsible plant based dye technique. This base layer is comfortable, powerful, sustainable, and, frankly, do-it-all-able.

The Men's Classic Thermal Merino Base Layer Colorblock Crew features 100% responsibly sourced Merino wool made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance. With shoulder panels and a flatlock seam construction, this base layer brings consistent comfort, as well as reliable warmth and durability, to winter hiking, running, and skiing.

Smartwool updated the fit of their Men's Merino 250 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.

A staple midlayer for dedicated mountain goers. This midweight fleece jacket is made with 96% recycled Thermic™ G stretch fleece, providing warmth and breathability on hikes, scrambles, and mountaineering adventures.

Ideal for layering up on high energy hiking, climbing, and mountaineering adventures in changeable conditions, this breathable midlayer regulates your temperature and offers superb comfort and mobility.

A lightweight version of our classic Snap-T® Pullover made with warm and durable midweight recycled polyester fleece. Fair Trade Certified™ sewn. Made with 87% recycled materials. Coated in a fluorinated durable water repellent (DWR) finish, a functional chemical coating containing PFCs (short for perfluorocarbons), making the garment water-resistant.

Providing everyday warmth and comfort, this lightweight quarter-zip fleece is made of 100% recycled polyester and can be worn as a lightweight jacket or layer. Fair Trade Certified™ sewn. Made with 87% recycled polyester materials. Perfect for Hiking activities or casual wear and work

The R1® Air Zip-Neck is a lightweight, breathable and quick-drying technical fleece for high-exertion activities in cold conditions. Fabric is made with 100% recycled polyester and is structured for comfort during movement. Fair Trade Certified™ sewn. Perfect for activities including hiking or casual wear and work.

Designed to keep you warm and comfortable in cold conditions. This stretchy, smooth-faced technical layer for everyday activities is made with a soft 94% recycled polyester fabric and feels like traditional fleece next to the skin. Fair Trade Certified™ sewn.

The R1® Pullover Hoody is a versatile, technical, midlayer fleece for stop/start activities in cold conditions. Made from a blend of recycled polyester and spandex, and constructed in a classic grid pattern to trap heat and wick moisture. Fair Trade Certified™ sewn.

You'll find yourself reaching for the Olden Polartec® Jacket from chilly late-summer nights all the way through spring ski season. Wear it as stretchy, moisture-wicking outerwear while training for your cold-weather marathon or grab your shell and board and use it as a soft, breathable midlayer for days carving up that fresh powder. Earned yourself an off-day after an epic climbing session at the crag? The Olden Jacket also shines as comfy loungewear when staying in and chilling hard are on the agenda.

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 heavyweight merino base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Crewe features 100% pure and natural merino wool.

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

A heavyweight merino base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Half Zip feature 100% pure and natural merino wool.

A unique 2-in-1 base layer crew with a with a warm-breathable 100% merino wool exterior and a 100% LIFA® wicking interior. The versatile LIFA® Merino Midweight Crew Base Layer adapts to any type of cold weather. Combined with a 100% merino wool layer with their proven LIFA® Stay Warm Technology in a fitted 2-layer construction. LIFA® Merino Midweight Crew Base Layer delivers all the breathable warmth of merino wool fibers, plus the unique moisture management properties of LIFA® fibers.

A performance half-zip base layer with a warm and breathable 100% merino wool exterior and a 100% LIFA® wicking interior. Their LIFA® Merino Midweight collection is perfect for any type of cold weather activity. They combined a 100% merino wool layer with their proven LIFA® fiber technology in a 2-layer construction. This LIFA® Merino Midweight layer delivers all the breathable, natural warmth of merino wool, plus the unique moisture management properties of LIFA® fibers.

Ready to move up to a better cool-weather jersey? The Tutto Nano RoS Jersey features a number of upgrades compared to what you've probably been using. First is the stretch fit that moves perfectly with you, made possible by the Nano Flex 3G fabric, the same fabric we use to make our arm and leg warmers as well as our Sorpasso tights. This close-to-body fit actually makes the jersey warmer by avoiding fabric flapping in the wind. Second is the tighter knit of the fabric compared to traditional thermal jersey fabrics. It lets less air through so you stay warmer. Next is Castelli's proprietary nanotechnology water-repellent finish. On dry days you won't even know it's there, but when you get some light rain or wet roads then you stay drier. Last is the 360° reflectivity, thanks to the panels on the shoulders and lower back. Of course, the Castelli attention to detail is there, with the easy-sliding YKK® Vislon® zipper with rubberized pull and the silicone gripper elastic to prevent the jersey from riding up.