Ortlieb Bike-Packer Classic The Ortlieb Bike-Packer Classic is made from ultra-durable PVC coated polyester fabric and is ready to be used for extended hours in any kind of weather. It's spacious enough to carry all your essentials and will keep your contents safe and secure. It's compatible with the QL2. 1 rack mounting system and provides great comfort, along with great stability and safety you deserve on your next adventure. Features shoulder strap with snap hookbase feet dust/snow gasket under the lid with cord inner pocket 3M Scotchlite reflectors | Ortlieb | Bikepacker Classic | Black | 40L/2441Cu. in, Ql2. 1, Pair | Polyester