NBN stands for "No Brand Needed. The NBN Mayfair 15'' Computer Backpack is designed for everyday use. Featuring a 15'' laptop sleeve in the main compartment, an easy access zippered pocket on the front flap and a front zippered pocket with organizational pocket, this backpack provides a space for all your belongings. This backpack includes upgrades like high quality printed material, printed interior lining, vinyl lash tab and interchangeable zipper pullers. Added features like a mesh water bottle pocket and silicon grab handle on the bottom make this bag a must have.