Designed for men who spend time in the mountains in all kinds of weather, the Arc'teryx Beta SL Jacket M is ideal for mountaineers, hikers, and skiers seeking reliable protection without sacrificing lightweight performance. Weighing just 340 grams in size M, this waterproof and windproof jacket features a PFAS-free GORE-TEX ePE membrane and is highly packable, making it easy to carry in a backpack. It’s part of Arc’teryx’s Winter collection as a versatile piece, equally at home on a snow-covered couloir as it is for everyday travel.

The Beta SL Jacket M: Mountain Protection with Next-Generation GORE-TEX Fabric

The GORE-TEX ePE membrane, at the heart of this mountain jacket, guarantees proven waterproofing and breathability while reducing the product’s carbon footprint compared to conventional membranes. It is made from plant-derived fibers, including bio-based nylon on the outer shell, and meets bluesign criteria, demonstrating that it is manufactured in compliance with environmental and health standards. The 100% nylon GORE C-KNIT™ inner lining improves glide and comfort, especially during intense activity. The FC0 DWR water-repellent treatment, which is also PFAS-free, completes the system by causing water to bead up on the fabric’s surface before it soaks into the jacket.

An articulated design for freedom of movement in alpine conditions

The Regular Fit and articulated design of the Beta SL Jacket M allow for a full range of motion, whether you’re climbing with crampons on a steep slope or paddling a sea kayak. WaterTight™ zippers ensure waterproofing at the most heavily used openings, while underarm ventilation zippers provide rapid temperature regulation during physical activity. The adjustable, helmet-compatible StormHood™ effectively protects against rain and strong winds without obstructing your field of vision. The adjustable Velcro cuffs allow for a precise fit to prevent air or water from seeping in.

Practical Details and Passive Safety

The storage system includes two zippered handwarmer pockets and an interior chest pocket, providing ample space for mountain essentials. The jacket features a RECCO® reflector, a passive device detectable by rescue teams equipped with specialized radar, which reduces the time it takes to locate the wearer in the event of an accident without requiring any action on the wearer’s part. Arc’teryx also offers the ReBIRD™ program, which allows for the exchange and maintenance of the jacket to extend its lifespan. The Beta SL Jacket M is Fair Trade certified and produced in Vietnam under working conditions that comply with the label’s standards.