100% recycled polyester. Backpack for laptops up to 11'', roll-top magnetic closure, water-repellent lining, exterior bottle pocket, zippered side pocket for umbrella, exterior front zipper for easy customization, interior breast pocket, padded mesh back, back luggage strap, padded and adjustable mesh shoulder straps. Size: 43x34x11cm, Capacity: 12 liters, Printable area: 27x27cm maximum. Tearable label.