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Outdoor Research says:
Warm and wicking base layers crafted with thermo-regulating technology to manage body temperature in quickly changing climates.
The Vigor Collection is your surefire ticket to layering intuitively and effectively for cold weather adventures. Each Vigor piece is powered by ActiveTemp™, the thermo-regulating technology that adjusts to your body temperature to keep you cool, dry, and comfortable during high-exertion activities. Take on each new adventure with Vigor.
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By placing quality first, we can offer the finest guarantee in the industry for each and every product – the Outdoor Research Infinite Guarantee™. We believe so strongly in the quality of the apparel and gear we make that if our product fails to meet your needs at any time, we are happy to replace it. Our products are guaranteed forever.