The lightest in the Beta lineup, the Arc'teryx Beta SL jacket is engineered for high-output mountain missions with GORE-TEX ePE for ultra-light, waterproof protection. C-KNIT backer tech adds comfort, pit zips enhance airflow, and the helmet-compatible StormHood keeps your vision clear and your head covered. Made with 100% Nylon, it features a waterproof finish, StormHood™, front zip closure, zipped pockets, and a RECCO® Reflector. The adjustable hem ensures a customized fit. Style Code: X000010552-022333. Designed for unforgiving climates, this jacket is crafted from ultra-tough PFC-free GORE-TEX ePE material for ultimate performance. It offers a regular fit, helmet-compatible StormHood for full coverage without impacting visibility, dual front zip pockets & internal pockets, and GORE C-KNIT backer technology. The PFC-free GORE-TEX ePE membrane provides breathable weather protection and a long product life with a DWR finish. It utilizes a 3L 40dx70d GORE-TEX ePE with C-KNIT backer technology. Item code: X000009684 022333.