Beta SL Jacket Men's is a shell jacket designed for climbing, hiking, and trail use, built as a light, packable GORE-TEX shell for waterproof, windproof, breathable protection. Product Type: Men's waterproof shell jacket. Material: GORE-TEX. GORE-TEX membrane delivers durable, dependable weather protection. C-KNIT backer technology improves comfort and breathability. Helmet-compatible StormHood, pit zippers for ventilation, and a RECCO reflector for search situations. Pair with men's hiking pants and a beanie for changing conditions on hikes and approaches. The Beta SL Jacket – our lightest Beta – is built for mountain realities. Highly versatile, it’s carefully designed to deliver complete waterproof, windproof, breathable protection without sacrificing lightweight packability. Its GORE-TEX membrane is light and strong. C-KNIT backer technology improves comfort and breathability. The helmet-compatible StormHood protects without compromising vision, pit zippers ventilate, and a RECCO reflector can aid in search situations.