Drag Racing Dad Port Authority Ridge BackpackDrag Racing Dad Port Authority Ridge Backpack For the Dad Who Carries Gear Like He Races All In. Whether hes heading to the track, the gym, or the office, the Drag Racing Dad Ridge Backpack is built to handle the horsepower of everyday life. With a rugged design, smart compartments, and a nod to high octane passion, this backpack is function meets fuel injected style. ? Built to Perform: Crafted from 420 denier linear dobby polyester and 600 denier