Long underwear — a.k.a. long johns, thermals, base layers, or whatever else you want to call the cozy, body-hugging tops and bottoms worn beneath looser clothes in cold weather — is my ...
Tech Features: Smartwool Intraknit Max Thermal Merino Base Layer combines advanced Intraknit technology with 100% merino yarn for superior insulation, moisture management, and thermoregulation.