I apologize for the amateur measurements, but as you can see in the photos, it has a large capacity. The shoulder straps and back are mesh, providing good ventilation (*^-^*) There are a few stains as shown in the photos, but I think they're not very noticeable☆ I think it will be useful for overnight trips like mountain climbing, so please use it(*´∇｀*) It also has many pockets(*´∇｀*) Black backpack with mesh pockets and adjustable shoulder straps. - Color: Black - Features: With mesh pockets - Straps: Adjustable shoulder straps Thank you for looking.