Spacious main compartment with zipped compartment. Zipped front pocket with additional compartment on the back. Water-repellent, concealed outer zips. Adjustable waist strap. Made of durable polyester/nylon inner: Nylon mesh in metallic look. Exterior dimensions: 13.39 x 8.66 x 5.51 in. (34 x 22 x 14 cm). Expands into a rucksack.