The Beta SL Jacket by Arc'teryx is the lightest in the Beta range, designed to deliver reliable protection in a highly packable form. Built for changing mountain conditions, it combines waterproof, windproof, and breathable performance with a streamlined, lightweight construction. The updated GORE-TEX ePE membrane offers durable weather protection with a reduced environmental impact, while C-KNIT™ backer technology enhances comfort against the skin. Lightweight, packable shell construction Waterproof, windproof, and breathable performance GORE-TEX ePE membrane (PFC-free) C-KNIT™ backer for improved comfort and breathability Helmet-compatible StormHood with full coverage Pit zips for ventilation RECCO reflector for search and rescue support Articulated patterning for unrestricted mobility Slight drop hem for added coverage Bio-based nylon face fabric bluesign® approved materials Dope dyed backer PFAS-free construction Jack is 186cm and is wearing a size Medium Please contact us here should you have any inquiries about the product.