Deuter Act Lite 45+10 SL Women's Hiking Backpack - Discontinued By Women, For Women - Women's backs are generally shorter than men's; Deuter's SL carry system is designed not only to accommodate this, but also account for other anatomical differences; SL packs bring together the latest physiological science and advanced ergonomics to deliver optimal comfort and performance through anatomically-sound construction Maximum Ventilation - Deuter's innovative AirContact ventilation back system delivers a body-hugging fit paired with unmatched breathability; The large open pore structure of the AirContact pads performs a pump effect, whereby every movement prompts the exchange of air moving warmth and moisture away from the body; The result: 15% less perspiration than with other body-contour packs Lighten Up - Crossed aluminium stays create an ultralight, flexible, yet stable internal frame that follows your body movements; The profiled X-frame transfers weight onto the hips; Slim and anatomically shaped hip wings ensure even, comfortable load distribution Features and Functionality - Deuter has married a passion for mountaineering with innovative German engineering since 1898; The result is a pack whose features provide everything you need and nothing you don't: compression straps, specialized compartments for your 2 or 3-liter hydration system, hiking poles, and wet gear or clothing; pockets in all the right places; even a SOS-Label with life-saving tips in case something goes wrong Built to Last - A 35-65 blend of Super-Polytex polyester and Ripstop 210 nylon gives the ACT Lite packs high-performance durability without extra weight; Strong ripstop threads and PU coating makes these backpacks water- and abrasion- resistant, allowing them to work harder and last longer even on long-range treks through punishing terrain