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 $ 99.95
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: Black
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: Charcoal Heather
Men's Inversion Heavyweight Merino Wool Base Layer Crew Shirt - color variant: Harvest/Outerspace
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Quick Buy
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms $ 79.95
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Charcoal Heather
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Black
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Rum Raisin
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - color variant: Sierra Cement
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Quick Buy
Men's Inversion Heavyweight Merino Wool Base Layer Bottoms - 3/4 Length $ 74.95
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.

"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.

Aspect High Neck Top

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

Paul J.

Aspect Midweight 3/4 Length Bottom

"I have 6 of these shirts now, I love them. I'm 6'5" 205 and have long arms it's hard to find clothes anywhere. I like an athletic fit and these are perfect."

Anthony F.

Aspect Midweight Crew

"So warm and I absolutely love the high waist!!"

Sophia B.

Aspect High Rise Bottom

"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

"These are the warmest and tough under layer I have ever owned. I will be buying more."

Nolan W.

Aspect Midweight Crew