The Arc'teryx Zeta SL jacket is ultra-lightweight, compact, and waterproof, designed for hiking and trekking in changing summer weather. It features GORE-TEX with Paclite® Plus technology for enhanced waterproofing and improved skin feel compared to standard Paclite. The men's size M version weighs approximately 310g. It has a precise yet non-restrictive fit, allowing freedom of movement and enough space for layering. Made with 40D nylon fabric for durability, it effectively protects against heavy rain and wind. Please feel free to ask any questions.