An ultra lightweight model with pitzips for ventilation and a chest pocket, which can be compactly stored. It uses a waterproof breathable GORE-TEX® fabrics that excels in lightness and durability, making it ideal for activities with high physical activity. Features Original "K-Mono CUT" pattern Tri-axial Hood ensures a snug fit and visibility Roll-up hood with a hook-and-loop tab fastens the hood in place, preventing it from flapping Weather resistant Aqua-Tect zipper keeps out water in a lightweight form Reflective material along zipper increases visibility at night Original sewing pattern allows unrestricted arm movement Bonded cuff edge saves weight and prevents water retention Alpine Cuff helps keep wind and snow out Hem adjuster quickly cinches the hem and helps shut out cold air Pit zip vents heat and moisture Fully seam sealed Smart Sewing Technology reduces weight by cutting extra fabric away from seams Stuff sack included 1 zippered left chest pocket Specs Material: 3-layer GORE-TEX® Fabrics (PFAS-free)15-denier Ballistic Airlight ripstop nylon (PFAS-free water repellent finish)Breathability: 20,000 g/m2/24 hrs (JIS L-1099 B-1 method, reference value)Water resistance: 20,000mm or more Weight: 7 oz / 198 g Total Weight: 7.4 oz / 209 g Packed Size: 3.1 x 3.1 x 5.9 in / 8 x 8 x 15 cm (1 L) SIZING CHART S M L XL Chest 36 - 38" 39 - 41" 42 - 44" 48 - 50" Sleeve 33" 34" 35" 37" Sizing Instructions: Measure your body and find your measurements in the chart above for the best fit. Finished Garment Measurements These measurements are for comparing our products to a similar garment you already own. Final garment measurements may vary slightly due to circumstances such as materials and sewing pattern. Therefore, an individual product may not have the exact same measurements as those shown here. S M L XL A. Neck Around 22.8" 23.2" 24" 24.6" B. Center Back 28" 28.7" 29.9" 31.1" C. Chest Around 45.7" 48.4" 51.2" 54.3" E. Bottom Hem Around 41.3" 44.1" 46.9" 50" F. Sleeve Length 35.8" 36.8" 37.8" 38.8"