When serious mountaineers face technical climbing challenges and multi-day alpine expeditions, the Arc'teryx Beta AR Jacket delivers uncompromising protection where it matters most. Built with GORE-TEX PRO Most Rugged 3-layer construction and an impressive 28,000mm waterproof rating, this technical climbing jacket laughs at sideways rain and howling winds while maintaining exceptional breathability for high-output activities. The helmet-compatible DropHood with integrated RECCO reflector keeps you covered during exposed ridge climbs, while underarm pit zips let you dump heat when the approach gets steep. Reinforced high-wear zones and mountain-specific design details ensure this past season gem will be your trusted companion through countless alpine adventures, proving that sometimes the best gear is the battle-tested gear that's already earned its stripes on the world's most demanding peaks.