Number of uses: Approximately 10 times Used for long bike rides and mountain climbing. Some signs of use, but no noticeable scratches or major stains. ● deuter ● Race EXP Air 14+3 ● Cycling, mountaineering backpack A model that can expand its capacity and is suitable for long touring. The back panel vents heat in three directions, providing excellent back ventilation and reducing perspiration by up to 25%. Material: 210D PA, 100D PA Ripstop Weight: 890g Capacity: 14+3L Size: 46 x 26 x 18 (height x width x depth) cm Aircomfort System Expandable Chest strap Built-in rain cover Valuables pocket Stretch compartment Helmet holder Hydration system 3.0L compatible Organizer pocket Safety light loop Breathable hip fins Shade holder Reflector External pockets (2) 【Condition】Good condition 【Accessories】Rain cover included ----- Reference below Back system with hollow mesh panel Based on the hollow mesh panel structure and Aircomfort System of mountaineering backpacks, the contact area with the body has been reduced by 30% by boldly removing the center of the back panel. More direct airflow and sweat release are achieved, and the panels arranged to sandwich the spine enhance lateral stability, eliminating the discomfort of the load on the back swaying during dynamic dancing. This new design, unique to Deuter, which has been researching backpacks for sports bikes, elevates the performance and comfort of all riders to a new level.