Seattle Sports SUP and Sit On Top Universal Foam Roof Block

This extra wide block adapts to cars with and without roof racks, to carry a SUP board or Sit on Top kayak. No Skid laminate keeps block in place against the roof of the vehicle. Foam block has a built in channel underneath which snaps around factory and after market roof racks. Use 2 blocks for 1 board or kayak. Extra wide 31 inch block works great for SUP boards and sit on top kayaks Block features No Skid laminate to keep board or boat in place while protecting the vehicles finish Compatible with factory racks, after market racks or no rack at all 1 block. Order 2 blocks for each boardboat