Spacious main compartment with opening for headphone cable. Additional zipped interior compartment and zipped front pockets. Water-repellent, concealed outer zips. Ergonomic padded back with air-circulation system and integrated slide-in compartment. Adjustable and padded shoulder and waist straps. Made of durable polyester/nylon. Lining: Nylon mesh in metallic look. Exterior dimensions: 19.69 x 15.75 x 5.51 in. (50 x 40 x 14 cm).