Product Description Lockable: No Mounting Straps: Included Material: Cordura Dimensions: 12.5" x 15.5" x 9.5" Storage Capacity: 1841 Cubic Inches Lid Opening: 15" x 12" Size Category: Journey (More than 3 Days) Expandable: Yes Weather Resistant: Yes Installation Installation Instructions Watch Installation Video Additional Details Easy to mount. Connects to bike with self-adjusting hooks. Reflective piping. Multiple pockets. Doubles as backpack. Holds 16 liters/22 liters expanded. Also Included Rain Cover.