Description The BiKASE CoolKase rack back is a soft cooler that is mountable to the rear rack of an Aventon ebike. Features Holds up to twelve 16-ounce bottles and up to 5 pounds of ice (800 cubic inches) RF welded to make it extra durable and watertight when upright Reflective panel accents for increased visibility and safety at night Puncture resistant outer shell and waterproof liner Includes an attached bottle opener Easy to carry, clean, and store Mount: Adjustable Straps Specs Volume: 800 c.i. Exterior Dimensions: 12" x 9.5" x 10" Interior Dimensions 8" x 11" x 9" Compatibility Compatible with all Aventon electric bike models that are equipped with a rear rack.