What Our Gearhead(R) Experts Are Saying:"This pack is a perfect balance between weight and comfort for multi-day treks. The Deuter Aircontact system keeps my back ventilated on warmer days, and I love the adjustable back length that lets me get the perfect fit. Plus, the durable ripstop fabric holds up well to rough trails and tight squeezes."Built for extended trekking and rugged trails, the Deuter Aircontact Ultra 50+5L Backpack combines lightweight comfort with long-lasting durability. This versatile pack features the Aircontact back system, which not only reduces weight but also enhances ventilation, keeping us cool on challenging hikes. The adjustable back length and ergonomic hip fins provide a secure, customized fit, evenly distributing the load for maximum comfort. With a hard-wearing ripstop fabric that withstands the demands of thru-hiking, this pack is ready for any adventure, allowing us to push further and carry more with ease. And when every ounce matters, the removable lid and compression straps let us shed unnecessary weight without sacrificing capacity.