I love the latest trend of going back to natural fibers. It conjures up memories of wearing old Army surplus pants and shirts on cold-weather outings in the Cascades as a kid. What worked well then, still works. The trend is to mix natural wool fibers with some of the latest technology to create the ultimate warmth, comfort and durability.

Enter the upcoming Varitherm Dri-Release wool base layer from Duofold. The Varitherm tops and bottoms are made of a mixture of merino wool, polyester and spandex to maintain a 360-degree stretch and have just the right amount of comfort next to the skin. The fabric mixture is dubbed Dri-Release wool and is rounded out by FreshGuard technology to keep things from getting too stinky.

Duofold Varitherm Dri-Release Wool Base Layers

Duofold Varitherm with Dri-release Wool will be available in a variety of styles for both men and women, including crews, bottoms and zip mocks. Special comfort features include TAGLESSĀ® tops and bottoms, and flatlock seams to help avoid irritation. For added protection against the cold, Duofold incorporated thumbholes on both tops to secure sleeves in place, and storm flaps on the zip mocks to keep cold air from entering through the neck area.

The new Duofold Varitherm base layers are a great example of the next generation of thermal underwear. They are more sustainable and contain more natural fibers that are enhanced by the latest technology to keep you warmer, dry faster and wear more comfortably. Look for the Duofold Varitherm line to be in stores Fall 2008.

BUY NOW: Shop for thermal base layers at Backcountry.com

About Author

A native of the Pacific Northwest, Jason quickly developed a love for the outdoors and a thing for mountains. That infatuation continues as he founded this site in 1999 -- sharing his love of road biking, mountain biking, trail running and skiing. That passion is channeled into every article or gear review he writes. Utah's Wasatch Mountains are his playground.

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