Made of waterproof oxford material (Oxford fabric is a durable and slightly coarser weaving technique (basket weave) used for resistant and breathable clothing as well as outdoor items. It is recognizable by its slightly grainy texture and is often made of cotton for shirts, or polyester for water-repellent applications.) For laptops up to 15.6 inches Content: 23 l With hidden pocket for theft protection With luggage strap to securely attach to a suitcase With USB port and cable to connect a power bank Handles on both sides Warranty: 5 years Dimensions 29 x 18 x 44 cm (L x W x H) Color: black