SDG USA 6-Rib Gripper Seat Cover - Black/White Ribs SDG 6-RIB Gripper covers offer superior grip and traction for all riding conditions with six additional colored ribs A three piece design and six 20mm RIB sections give the rider maximum control and feel in any seated position High-grip six-RIB center seat pattern offers a tacky confident feel that will inspire you to twist that throttle while the high-grip dot pattern sides allow for better rider control All seams are double-stitched for added durability and water resistance The ultimate Gripper cover, offering riders maximum control