Arc'teryx Spring/Summer New Men's Sun Protection Lightweight Jacket features a unique custom sun-protective four-way stretch fabric that offers exceptional elasticity and recovery. The fabric is designed to stretch in all directions-warp, weft, horizontal, vertical, and diagonal-adapting to a wide range of body movements such as exercising and squatting without losing shape. It employs a blend of elastic fibers to ensure that it quickly returns to its original state after multiple stretches, preventing sagging and bulging. The jacket is designed for comfort and a snug fit without feeling restrictive, utilizing adaptive tailoring that naturally conforms to the body's curves without relying on complex patterns.Lightweight and breathable, it incorporates high-density weaving or micropore structure technology to balance elasticity and breathability, reducing the feeling of heat, making it suitable for prolonged wear. It is highly durable, with a long lifespan and tear resistance, achieved through a scientific blend of polyester, nylon, and elastic fibers that enhances the fabric's abrasion resistance and anti-snag properties, making it particularly suitable for outdoor sports or high-frequency use. Available in sizes M-3XL.