Alpha SL 30 Backpack is a daypack designed for climbing and rock climbing, built as an ultralight, ultra-durable 30L pack for rock, ice, and alpine use. Product Type: Unisex ultralight, ultra-durable daypack Material: ALUULA Graflyte™ 30L capacity for climbing days Tough enough for rock, ice, and alpine climbing Fused polymer-film fabric engineered for high tear strength Pair it with a men’s shell jacket or a women’s shell jacket for added protection on exposed alpine routes. Lighter’s faster, and with the Alpha 30L pack, it’s stronger, too. Tough enough for rock, ice, and alpine climbing, our unique ALUULA Graflyte™ fabric fuses ultralight, ultra-strong polymer films to create a single material with unrivaled tear strength — and a pack that weighs next to nothing, so all you’ll feel is the weight of your gear.