When the mountains demand both protection and performance, the Arc'teryx Beta SL Jacket delivers uncompromising waterproof coverage without the bulk. At just 340g, this discontinued gem from the renowned Beta series proves that ultralight doesn't mean compromising on capability. Built with GORE-TEX ePE technology and C-KNIT backer, it shields you from sudden alpine storms and persistent drizzle while maintaining exceptional breathability during high-output climbs and scrambles. The helmet-compatible StormHood and articulated patterning ensure you can move freely whether you're reaching for technical holds or navigating exposed ridges, while strategic pit zippers let you dump heat fast when the intensity ramps up. For mountaineers and backcountry enthusiasts who count every gram but refuse to compromise on weather protection, the Beta SL represents the pinnacle of lightweight shell design.
