Fission Series: Insulated, windproof, waterproof outer layers. SL: Super Light. Uses the lightest weight materials available to provide high weather protection, performance andor packability, but with the right amount of durability. The Fission SL is our lightest fully waterproof insulated jacket, delivering exceptional warmth to weight with GORE TEXR Pro Shell protection. Constructed with our exclusive laminated ThermaTekTM non quilted insulation, this lightweight jacket is both warm and hydrophobic. Featuring pit zips to extend active usability on cold days, and an insulated Storm Hood to provide shelter as conditions demand. Features: Waterproof Breathable Insulated Lightweight Compressible and packable Durable Quick drying Taped seams for added weatherproofness Micro seam allowance 1.6 mm reduces bulk and weight DWR finish Durable Water Repellent helps repel water from fabric surface Smooth inner face fabric allows for easy layering Laminated ThermaTekTM non quilted construction eliminates cold spots Anatomical shaping for fit and comfort Articulated elbows Gusseted underarms Athletic fit for a slimmer more flattering profile Laminated brim Adjustable hood drawcords Insulated, helmet compatible StormHoodTM Chin guard with brushed microsuede facing for added comfort Integrated fitted collar panel for added warmth and comfort WaterTightTM external zippers Pit zippers for easy venting Laminated pit zippers allow for faster venting Corded zipper pulls reduce noise and are easy to grab Snap closure on bottom of zip WaterTightTM full separating Vislon two way front zip Laminated die cut VelcroR cuff adjusters reduce bulk, and won't catch or tear off Die cut VelcroR cuff adjusters reduce bulk, and won't catch or tear off Adjustable hem drawcord Laminated hem Drop back hem Floating hem drawcord provides a snug closure Two hand pockets with WaterTightTM zippers Two internal mesh pockets Two hand pockets with laminated zippers Athletic Fit, Hip Length Weight: 655 g 1 lb 7.1 oz Activity: All Round Materials: N40p X GORE TEXR 2L ThermaTekTM 2.7 oz 100% nylon face, 92 gm . Comprised of a high tenacity 30 denier nylon fabric laminated to a 2.7 ounce continuous fibre fill insulation which is then completely immersed in DWR Durable Water Repellent treatment.