• Light and stable U-shaped frame in solid aluminium.Large opening for easy access. • Winter certified YKK vislon zippers with dual plackets. • Thanks to shoulder straps with Butterfly Bridge™ construction and an ergonomic hip belt, you will carry on bones, not on muscles. • Back length is easily changed by moving the shoulder straps and/or the hip belt. • Unique ergonomically designed hip belt, with adjustable length. • The hip belt and shoulder harness are easily placed and hidden under the back for flight mode. • The top adjuster angle is adjustable.Adjustable chest strap. • External place for the hydration system.Internal organizer and detachable laptop protector. • Internal security pocket for the wallet and keys. • Frame supported tent shelf. • The specially designed cord webbing allows you to attach a great number of accessories.Whistle and reflective. • Comes equipped with two detachable equipment fasteners. • Extra equipment available as accessories.