Deuter Aircontact Ultra 40+5 Backpack Ain't No Mountain High Enough The Aircontact Ultra 40+5 Backpack is crafted for fastpacking, multi-day treks, and alpine expeditions where every ounce counts. This pack features a comfortable back system for exceptional ventilation and load stability, helping you stay energized on long days. Its expandable 40+5-liter capacity offers plenty of room for gear while keeping weight to a minimum. Multiple compartments and gear loops ensure quick access and organization on the trail. Durable, lightweight, and eco-conscious, the Aircontact Ultra is built to take your adventures to the next level. Features Ventilated back system, provides maximum airflow and balanced load distribution Expandable volume, increases from 40 liters to 45 liters to accommodate extra gear Multiple compartments, including a large main compartment, stretch side pockets, and a zippered top lid pocket Gear attachment loops, for trekking poles, ice axes, and additional equipment Lightweight design, ideal for fastpacking and extended hikes Hydration system compatible, features an internal sleeve for your water reservoir Eco-friendly materials, constructed with sustainable bluesign(R) approved fabrics MFG#: 123461-AC40+5SPECIFICATIONSIntended Use Backpacking, Hiking Capacity40 + 5 LWeight3. 7 lbs / 1680 g Dimensions28" x 13" x 11"Material210D nylon, 600D polyester Frame Type Internal Frame Hydration Compatible Yes Expandable Capacity Up to 45 L | Deuter | Aircontact Ultra 40+5 Backpack | Nylon