With its ultra-lightweight construction and adjustable back system, the Lightning was developed for trekking tours where low weight and high carrying comfort are crucial. The innovative T-Rex carrying system with reduced contact points ensures effective ventilation and freedom of movement. The back length can be precisely adjusted, while the efficient load transfer to the hip belt ensures a stable and comfortable fit even with a heavier pack weight. Sophisticated pack volume management allows flexible adjustments. The zig-zag compression straps are easy to adjust and, together with the roll-top fastener, allow variable volume control. They also secure larger equipment such as a sleeping mat or flysheet. Generous mesh outer pockets, zipped pockets on the hip belt and modular attachment points support clear organisation. Made from ultra-light ripstop nylon with a reinforced polyester base, the Lightning combines minimal weight, durable performance and well thought-out design. Features include: T-Rex carrying system with reduced contact points ensures effective ventilation and freedom of movement. Adjustable torso sizing. Hipbelt pockets. Shoulder strap pocket. Roll-top closure. Top, base, and side compression and gear attachment straps. Stretch-mesh side pockets. Large front stash pocket. Trekking pole attachment. 210D HD ripstop nylon and recycled 600D 82T polyester fabrics (bluesign approved). 5-year warranty. Capacity: 50 litres Dimensions: 70x35x25cm Weight: 1.19kg (S/M), 1.24kg (L/XL) Recommended maximum load: 22kg Harness sizing:S/M - Back length 43 to 51cmL/XL - Back length 47 to 57cm Back length is the distance from the base of the back of the neck (C7 vertebra) to level with top of the hip bone (iliac crest).