The Black Diamond Coefficient LT Hybrid Hoody transforms high-output mountain adventures with its brilliant hybrid design that puts warmth exactly where you need it most. Whether you're pushing hard on alpine approaches, grinding through backcountry ski tours, or charging up technical climbs, this technical mid-layer delivers the perfect balance of protection and breathability. The Polartec® Power Grid® fleece back panel keeps you dry during intense efforts with its gridded interior that wicks moisture like a champ, while the Primaloft insulated front panel shields your core from wind and weather without overheating. At just 218g, this slim-cut hoody layers seamlessly under shells, and the gusseted underarms give you the mobility to reach for holds or pole plant without restriction. The under-helmet hood means you're covered whether you're wearing a climbing helmet or ski helmet, making this the go-to piece for mountaineers and backcountry athletes who refuse to compromise between warmth and performance.