Durable, water resistant and spacious. 18 x 13 x 6.25. I recently bought it and used one time only to go hiking. There’s a stain inside the main compartment. There are two compartments and one front zipper. There also a special pocket for laptop inside main compartment. It also has an adjustable waist belt. In great condition, other than the stain which is inside the backpack. Any questions please ask!