Keep your truck scratch-free and bikes safe with the T2 pad Six adjustment straps to ensure a tailored fit on varying tailgate shapes, including curved Camera/handle window to make backing up a cinch Two additional straps for securing eBikes Raised bumpers and downtube straps hold frames snug and minimize frame contact when shuttling. Micro-brushed inner lining protects your tailgate from rub and wear marks Full-Size = 6 bikes, Mid-Size = 5 bikes, 1/2 Stack = 2 bikes Sizes are truck dependent: Med/Sm for mid-size pickups, L/XL for full-size pickups