The Arc'teryx Alpha SL Hybrid Jacket uses super-tough Gore Tex Pro Shell in areas of high stress, like the shoulders and underarms, to add durability. The body, sleeves, and hood of the Alpha SL Hybrid are Gore Tex Paclite, which reduces weight and increases packability.

    Gore Tex Pro Shell on the shoulders and in the underarms for added durability
    Helmet-compatible Storm Hood with volume adjustability
    Laminated watertight zippers for complete waterproofness
    Gusseted underarms for added durability and unlimited range of motion
    Athletic fit is ideal for layering under or over