A woman dressed for backpacking in the snow
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Smartwool

Smartwool is more than just soft, warm, itch-free and odor-resistant socks. It’s also clothing, hats and accessories for the whole family. For over 20 years, they’ve been pushing the boundaries of Merino to create smarter, more comfortable gear from head to toe.

4.6 (7114 reviews)

REI offers 394 Smartwool products

Snow-covered mountains in the background, two friends in warm Smartwool clothing kick back on a sunny porch

Happy sheep grow great wool

Smartwool’s merino base layers are made with 100% responsibly sourced, ZQ-certified merino wool. ZQ is a New Zealand program that ensures the highest standards for wool quality, animal welfare and environmental responsibility. Now that's smart.

Smartwool Intraknit base layers

Breathable, flexible warmth for your most active pursuits.

Precision fit

Sculpted to the shape of the human body for a near-custom fit.

Body-mapped zones

Strategically designed to put ventilation and insulation where you need them most.

Virtually zero waste

Novel knitting technique means less waste is sent to the landfill.