Rage Powersports Vehicle Roof Canoe Carrier Foam Blocks Secures a single canoe to a vehicle roof without crossbars or side rails Foam block feet with slot openings to fit canoe hull edges (3) Cam buckle tie-down straps and (4) steel S-hooks to secure the canoe (2) Tie-down ropes for kayak bow and stern attachment to vehicle High-density polyethylene foam creates a buffer between the canoe and vehicle roof