A lightweight, packable jacket that delivers top performance in weatherproofing. This is Arc'teryx's lightest jacket in the Beta range, ready for rigorous mountain pursuits. Engineered with a GORE-TEX ePE membrane and C-KNIT backer technology, this innovative design provides full water and windproofing, comfort, and breathability. The helmet-compatible StormHood offers full coverage to protect from rain, snow, and sleet without compromising visibility. Velcro-adjustable cuffs seal out water, and pit zippers provide ventilation. The RECCO reflector aids in search and rescue situations. Articulated patterning ensures unhindered mobility, and two hand pockets with an additional internal chest pocket offer storage. Whether you’re hiking over hills, up mountain paths, or scaling a crag, this jacket offers lightweight, weatherproof performance perfect for taking on the mountain. The Beta SL Jacket was previously the Beta Lightweight (LT) Jacket.