Hatchet Backpack - 15" Grey Tar. Combining fashion with functionality, the JanSport Hatchet backpack makes your week-long expedition a stylish affair. Made of 600 denier polyester, this travel backpack is sturdy and weather-resistant. Designed to fit 15 inch laptops, it has a spacious main compartment, a tablet pocket, and several other pockets to organize your gear, water bottle, and accessories. Its fully padded shoulder straps and back panel offer wearing comfort. An adjustable sternum strap helps stabilize this backpack when treading rough terrains. You can also fit in a 183.07-cubic inch hydration system in this 15 inch laptop backpack.