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Steep Series™ Logo
Two geared-up mountaineers walk confidently into icy winter conditions in the high-alpine.
Steep Series™ Logo
Two mountaineers prepare to head upward in an icy valley ourside of Chamonix, France.

Engineered for more.

Summit Series is built to stand the tests of nature and time. It’s developed for the best, when the best are at their limit.

A mountaineer checks his gear before taking on an ice wall in Ouray, Colorado.

Powering the impossible.

To push the boundaries of human exploration, we've pushed the potential of design. The technologies in Summit Series™ open new possibilities for athletes.

Summit SeriesTM Layering System

Innovation from the inside out.

First layer.
Lightweight strength.

Performance-driven to push away sweat with advanced yarn technology.

Second layer.
Breakthrough comfort.

A breathable full-loop fleece that reimagines the power of lightweight warmth.

Third layer.
Down that breathes.

Revolutionary down construction for breathable warmth without the bulk.

Outer layer.
Breathable-waterproof shield.

Our most advanced waterproof technology with better venting for breathability.

Final layer.
Weightless warmth.

Developed to elevate thermal performance with lightweight down construction.

Two intrepid mountaineers are silhouetted against the cold, gray sky as they scramble across a jagged alpine ridge.
Athlete Tested Expedition Proven™ Logo

Summit Series offers innovation from the inside out, with a full range of base, mid and outer layers each representing the pinnacle of performance technology.