Nylon is one of the most durable materials around, so it makes sense this bag is stitched from the science-born stuff. It's a heavyweight material, constructed into an everyday bag with two padded, adjustable straps. The padded interior pocket is large enough for a 15-inch MacBook, while the two exterior zip pockets keep your small items secure and organized. As an added bonus, the whole bag is machine washable, so getting out stains and marks is easy as finding a couple of quarters.