The new AT Hybrid Vest combines strategically placed stretch fabric with insulated panels. Sun Mountain is using patented 37.5® premium insulation, which makes you more comfortable by helping control your core temperature. The insulation retains body heat, while 37.5 active particles embedded in the insulation accelerate vapor movement preventing overheating and moisture build-up.

Water-resistant, windproof, nylon fabric with a DWR finish

37.5 insulation provides an extreme weight-to-warmth ratio

Chemical-free, natural insulation

Versatile, lightweight & comfortable

Zippered hand warmer pockets

Sun Mountain

Sun Mountain Women's AT Hybrid Vest

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