The Arc'teryx Beta SL men's lightweight and packable hiking jacket is built for mountain conditions where weather protection and versatility are essential. Designed with a lightweight, durable 3-layer Gore-Tex® shell made from recycled nylon, it combines waterproof, windproof, and breathable performance with a PFC-free construction and a DWR water-repellent finish. The soft Gore-Tex® C-Knit backer enhances next-to-body comfort, while the fitted cut and articulated design promote natural mobility on the trail. An adjustable, helmet-compatible StormHood™, underarm ventilation zippers, and a high-collar front zipper help you adapt to changing conditions throughout the day. Complete with secure zippered pockets, adjustable cuffs and hem, and a Recco® rescue reflector, this technical hiking jacket is thoughtfully equipped for a wide range of mountain adventures.