Gently used backpack, sold with key chain, small dirt spot on back, but I haven’t tried to clean it, probably would come out Laptop storage: Exterior padded pocket fits a 15" laptop Water bottle pocket: Exterior water bottle pocket for quick access to hydration Ventilation: The main compartment is ventilated so you can stash your sweaty gear and let it breathe Dimensions: 12" × 5.7" × 18.2" Volume: 27L