Designed to stay unnoticed until it’s needed, the super lightweight, compressible waterproof/breathable Beta SL Jacket weighs a scant 315 grams (11.1 oz). Made from N40r GORE-TEX® fabric with Paclite® product technology, it delivers proven complete weather protection with a high level of breathability.MOST PACKABLEAs weight and space are critical factors in the Beta SL’s performance, the lightest and most packable GORE-TEX® fabric, N40r GORE-TEX® fabric with Paclite® product technology, is used. Waterproof and highly breathable, the fabric protects from the weather and offers a higher level of comfort during activity. As the Beta SL is intended for periodic emergency use, a less abrasion resistant textile is used to eliminate weight and bulk. However, the fabric has a mini ripstop construction that provides added tear strength without impacting weight. SIMPLICITY IN ACTIONThe goal was to pare the Beta SL to its essence and achieve specific functional requirements for the lowest possible weight. Careful, efficient construction techniques allow Arc’teryx to use micro seam allowances and tiny (13 mm) GORE® seam tape. The Trim fit reduces fabric requirements and improves breathability. Carefully articulated patterning and gusseted underarms provide freedom of movement without adding bulk. The low profile Stormhood™ offers complete coverage with a streamlined design. This is a true minimalist’s hardshell, designed to be light, small and efficient.