Summit Series

Summit Series™ represents the pinnacle of outdoor product technology, design innovation and athlete testing. We design this collection to keep our athletes warm, dry and safe in extreme environments and engineer product based on their feedback in the field. This collaboration results in the strongest, lightest gear available that’s built for summit success.

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Thermoball

Thermoball

ThermoBall™ is a revolution in synthetic insulation technology. Unlike traditional, continuous-filament synthetic insulations, the small, round synthetic fiber clusters closely to mimic down clusters; trapping heat within small air pockets to retain warmth.

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