These Canoe Foam Roof Rack Blocks can be used in two ways. They can either be used to pad an existing roof rack or they can be used directly on the car roof if you dont have a roof rack at all.
Comes in a pack of four.
They should be combined with cam straps to secure the boat to the roof or roofrack.
Roof mounted kayaks should also always use nose and tail lines to help keep them securely in place.