The all-new BK-4BORDRONE wheeled-backpack is both large lightweight. It's unique rigid-frame design innovation is used to create a solid frame structure with less weight than traditional rigid frames without sacrificing the level of protection. The BK-4BORDRONE has smooth-rolling, off-road wheels with ball-bearings and solid-steel axels for added strength. The wheels are also removable to help prevent damage during air-travel. The large padded interior is ideal for carrying a quadcopter and accessories.