Designed to stay unnoticed until itís needed, the super lightweight, compressible waterproof/breathable Beta SL Jacket weighs a scant 315 grams (11.1 oz). Made from N40r GORE-TEXÆ fabric with PacliteÆ product technology, it delivers proven complete weather protection with a high level of breathability. As weight and space are critical factors in the Beta SLís performance, the lightest and most packable GORE-TEXÆ fabric, N40r GORE-TEXÆ fabric with PacliteÆ 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.