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- shell: 100% nylon / insulation 100% polyester
- Versatile ThermoBall synthetic insulated jacket achieves warmth in cold, wet weather
- Thermoball powered by PrimaLoft synthetic insulation retains loft and warmth, even when wet
- ThermoBall offers the lightweight loft, warmth and compressibility of down with the wet-weather insulating performance of synthetics
- Zippered hand pockets
- Internal elastic cuffs
This fits your .
Updated with streamlined baffles contoured to fit your body, our PrimaLoft ThermoBall jacket offers ultralight, highly compressible synthetic insulation to keep you warm in a variety of winter conditions. Our new insulation technology features round ThermoBall clusters that trap and retain heat to achieve phenomenal warmth in cold, wet weather. Wear or pack this ultralight jacket for reliable thermal insulation while winter camping in the backcountry.