Features stylish clamshell molded EVA foam design. Expandable sides for extra storage. Quick installation on any Delta Megarack (except Disc Rack and Megarack Sport which require two holes drilled in top platform). Includes easy on-off Velcro attachment and snap-locks for security. Two internal and two size zip pockets. Volume: 16.7 liters (775 Cu inches). Bag Dimensions: 15 1/4" x 8 3/4" x 8"