This is a lightweight roll-top backpack with excellent waterproof properties. Used 5 or 6 times. There are no noticeable scratches, and it's still in great condition! I'm selling it because I bought another backpack. From the following site: Model Name: ALTIPLANO PACK 40 Color: Navy Roll-top type Capacity: 40 liters ◇ Description This is a lightweight backpack equipped with a roll-up system for excellent operability and waterproofness. While improving comfort and functionality, significant weight reduction has also been achieved. It is suitable for a wide range of activities, from day hikes and speed hikes to overnight mountain trips. ◇ Specifications [Material] Body: 30-denier Ballistic® nylon ripstop [urethane coating] (Bottom) 100-denier nylon triple ripstop [urethane coating] Back: 3D mesh Aqua Barrier Sack: 40-denier nylon ripstop [urethane coating]