The S/LAB Ultra Jacket is an ultra-light, high-performance trail running jacket designed for athletes tackling demanding conditions. Built with Pertex Shield technology and AdvancedSkin Dry 10K/10K membrane, it offers exceptional waterproofing and wind protection while maintaining breathability for long-distance runs. Its 3-layer stretch fabric ensures freedom of movement, and the thermo-sealed seams enhance durability and water resistance. The jacket features an adjustable hood with visor, Lycra cuffs with thumb loops, and reflective details for visibility. It is packable, folding into its own pocket for easy storage during ultra-trail races.