Our 100% Merino Inversion base layers feel great on their own or as an under layer beneath technical and everyday clothing.

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Quick Buy
Men's Inversion Heavyweight Merino Wool Base Layer Crew Shirt $ 99
Men's Inversion Heavyweight Merino Wool Base Layer Crew Shirt - color variant: Rum Raisin
Men's Inversion Heavyweight Merino Wool Base Layer Crew Shirt - color variant: Sierra Cement-Black
Men's Inversion Heavyweight Merino Wool Base Layer Crew Shirt - color variant: Black
Men's Inversion Heavyweight Merino Wool Base Layer Crew Shirt - color variant: Charcoal Heather
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Quick Buy
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms $ 79
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Sierra Cement
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Rum Raisin
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Black
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Charcoal Heather
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Quick Buy
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - 3/4 Length $ 75
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - 3/4 Length - color variant: Black
Molly Armanino smiles on a ski day wearing Ridge base layers

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 heavyweight 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, our Merino base layers will move with you.

a man stands in a snowy forest wearing a Ridge Merino Hyde midlayer and sunglasses

Discover Merino Wool

Merino wool offers a buttery softness unmatched by other types of wool. Merino fibers are very fine and don't have the scratchy feel many people associate with wool clothing. Our 100% Merino wool heavyweight base layers are pieces you will want to put on and never take off.

a woman stands on a balcony wearing Ridge Merino Inversion base layers

Fabric You Need to Feel to Believe

Our warm 100% Merino Wool Inversion Base Layers offer the perfect option for those colder days on or off the resort.

Base Layer Reviews

Take it from our customers.

"Working in the utility industry, I’m outdoors 24/7. Not only are these base layers warm, they also don’t wear out quick if you wash and dry like you’re supposed to. Cuffs are elastic which don’t move around. Have 6 of them and buy more every year. They don’t smell either in hot or cold weather. Highly recommend."

H.

Men's Inversion Base Layer Crew Shirt

"Can’t spend the winter with any other layers! Get a set every year! This is the third!"

JoAnn C.

Women's Inversion Base Layer Leggings

"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 Base Layer Crew Shirt

"Supremely comfortable baselayer. The thick knit wool has a “classic long johns” feel, but the wool is quite soft and minimal itch. The fit is perfect - closely fitted but not tight."

Jesse L.

Men's Inversion Base Layer Bottoms