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.

Shop the Collection

Goose Down Fill

Goose Down

Using only the highest-quality goose down in all of our products, each lot of down is thoroughly tested at three stages of production for loftiness, moisture resistance and ability to regain loft after compression. The fill power of goose down is an indicator of two important features: the warmth-to-weight ratio and compressibility, both critical to the user's warmth comfort. True fill power is measured by placing one ounce of down graduated cylinder and measuring the volume the down occupies cubic inches. Our products are insulated with exclusive, high-fill-power down ranging from 550 fill to 950 fill, representing the highest-quality down commercially available.

Shop Goose Down

PrimaLoft®

PrimaLoft® insulation is the world’s best down alternative for wet-weather insulating performance. Each series achieves comfort in any condition by delivering warmth without bulk, water resistance and compressibility that mimics goose down.

Learn More