Merino Wool Base Layers

Whether you're hitting the slopes or setting up camp for the weekend, Merino wool base layers keep you warm and comfortable for any adventure that lies ahead. Choose from our midweight or heavyweight options—both add warmth without adding bulk to your layering kit.

a splitboarder puts skins on his splitboard to prepare for the descent in the Mammoth Lakes backcountry

Built For Adventure

At Ridge Merino we create simple, everyday apparel with the mettle to weather expeditions, insulate adventures and soften the daily grind. Our base layers are no exception when it comes to technical apparel you can rely on. Whether you're climbing Mt. Whitney or skiing the resort—or just need to stay warm walking your dog in the winter—our Merino base layers will move with you.

a splitboarder skins on a groomed trail in the Mammoth Lakes area

Discover Merino Wool

Our midweight Aspect Merino wool base layers are the perfect foundation when the temps dip. They're warm yet versatile, and they feature our exclusive (m)Force Technology for improved strength and durability. Our heavyweight Inversion 100% Merino wool base layers provide even more warmth without adding bulk. The sleek design is great for resort days, cold winter walks or when you just want to cozy up in something all natural.

Fabric You Need to Feel to Believe

Merino wool is soft, breathable, odor-resistant, moisture-wicking and temperature-regulating, making it perfect for any adventure. It's a fiber that feels amazing against your skin while providing incredible technical performance benefits.

Base Layer Reviews

Take it from our customers.

"I now have 3 of these shirts. I’m cold all the time and I wear them under everything all winter long. Soft yet durable. My first one is 3+ years old and looks like new."

Diane A.

Women's Inversion Base Layer Shirt

"These are the perfect length so they don't get bunched up in ski boots. Warm, wick well and comfy."

Paul J.

Men's Aspect 3/4 Length Bottoms

"I live in these. Just broke down and ordered a second pair. I hate the battle of smoothing all the lines under my snowboard boots and these have solved all of that."

Women's Inversion 3/4 Length Bottoms

"Love this weight for skiing during the cold Yukon winters. The thumb holes are a nice addition. Simple and refined cut."

Benjamin L.

Men's Inversion Base Layer Shirt

"I love this top! It’s comfortable (soft) and light weight but warm and the high neck is nice for skiing to protect from cold wind! It has a flattering fit too!"

Karin H.

Women's Aspect High Neck Top

"Tried 'em out paired with the matching top and I was toasty while I hiked around in a blizzard. Will definitely be buying more pairs."

Men's Inversion Base Layer Bottoms

"Love these! Warm and comfortable, but still have a little compression so they don't sag. These are my new favorite layers for camping!"

Women's Aspect High Rise Bottoms

"Exactly as described, warm and breathable, well built and soft, stretchy with a good fit, bought it for running since my last wool quarter zip has worked so well and not gotten stinky."

Mark H.

Aspect Midweight Crew 1/4 Zip

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Merino Wool Base Layers

Built For Adventure

Discover Merino Wool

Fabric You Need to Feel to Believe

Base Layer Reviews