Trek took a different approach with the 1120, and we decided to follow suit. Specifically designed for the 1120 rear rack, the pack provides easy access via a clamshell zipper and eliminates the need for a tangled web of bungie cords on top of your rack. Specs: 1000D Cordura nylon exterior 200D Nylon Silver Lining #9 Ideal Zipper with Nanosphere Coating Foam stiffeners in all panels Capacity: 4 Liters 100% made in USA All our color options are found HERE! Each panel of the pack can be a different color if your heart desires it. Also check out our exterior fabric selection guide HERE! Current turnaround time for custom packs can be found on the banner at the top of the website! *** PLEASE NOTE: Electric Pink and Highlighter colors are more prone to fading with heavy sun exposure ***