Thank you for viewing. This product is authentic, purchased from a US store, so please rest assured. ★Arc'teryx Canada Arc'teryx★ Arc'teryx Alpha SL 23 Backpack Arc'teryx Alpha SL 23 Backpack Size: 23 liters Color: Black An ultra-lightweight summit pack made with durable Hadron LCP grid-woven material. The Alpha, which is ultra-lightweight and boasts excellent durability and comfort, is a summit pack with no compromises. Sized with a final push and a minimalist approach, it uses Hadron LCP (Liquid Crystal Polymer) grid-woven material. This is a uniquely developed material that fundamentally overturns conventional standards in terms of lightness, abrasion resistance, and durability in the mountains. Access to the main compartment is quick and simple. It has one small pocket inside and one on the flap to store necessary small items. It can be easily stored in a larger pack and comes with dual dog bones that securely hold tools. It also has a built-in system for carrying ropes.