When it comes to the combination of strength, low weight, wear resistance, and water resistance, X-Pac is hard to beat. X-Pac consists of four layers: a durable polyester face fabric that provides abrasion resistance, a reinforcing grid made of high-strength polyester fibers that improves tear resistance, a polyethylene film that provides water resistance, and an additional polyester layer that protects the film from damage. Laminated together, these layers form a single material that is ideally suited for backpacks and travel accessories. As a result, your backpack, wallet, or toiletry bag can last significantly longer while still allowing you to enjoy the low weight of modern outdoor gear. That is why X-Pac has become one of the key materials used in Ultralight Alternatives products.