Blackburn Central Trunk Rack Top Bag. Built with a sleek and modern design, the Blackburn Central Trunk Rack Top Bag is packed with the functionality you need for regular commutes. It's Interlock compatible, which means the trunk bag AND its contents can be secured with a single key to Blackburn's Interlock racks. Padded, adjustable internal dividers keep your dirty clothes separate from your clean clothes. Interior mesh pocket accommodates shoes or accessories while the fleece lined exterior pockets hold smaller items. Integrated and stowable rain cover offers protection in wet weather.