This Kul Rex is made specifically for bike use. Customized  wood spine with a racing stripe from end to end and added pockets, zippers, and redesigned straps on the back end and side to fit as comfortably on your bike as on your shoulder. 

This Kul Porter Racing Stripe edition is the smaller version of the Rex. Customized wood spine similarly to the Rex with a Mahogany and Maple. Racing stripes from end to end identical added pockets, zipers and newlyredesigned straps on the backend and side to fit as comfortably on your bike as on your shoulder.