The NRS Deluxe Canoe Car Rack Kit is a simple, effective system for transporting your boat to and from the water. The non-skid foam blocks protect your canoe and vehicle roof. You can be rigged and ready to go in a snap. Durable mini cell foam cushions your boat and protects your vehicle. The slot in the foam blocks can pop onto the canoe gunwales (two per side). Two 15-foot padded straps provide secure center tie down support.