This is a Deuter backpack for cycling. The part that rests against your back is mesh, providing good ventilation. It also comes with a rain cover, which has never been used. The helmet net is also unused. It has only been used 2-3 times and I don't think there are any noticeable stains. The mesh on the back is still firm, and the zippers open and close smoothly without any problems. Please refrain from purchasing if you are overly concerned about minor details. #Roadbike #Roadracer #Crossbike #Bicycle #Mountainbike