Alchemy Goods Brooklyn Backpack Constructed from recycled bicycle inner tube for a durable, highly water-resistant exterior that includes padded back and shoulder straps Padded internal laptop sleeve easily holds 15" laptops 2 easy-access exterior zippered pockets 2 inside slip pockets and 3 internal pen slots help you stay organized Measures 18 Inch by 12 Inch by 4.5 Inch Design may vary