Yakima canoe foam blocks are an entry-level canoe carrying solution for shorter trips and learning the ropes of watersport carrier transportation. Each foam block is laminated and "super-grippy" to keep a firm hold on the canoe while the anti-skid pads protect the vehicle roof. Two versions of Yakima canoe foam blocks are available. The Standard Canoe Foam Blocks are designed specifically to work with Yakima series roof cross bar systems, and the Universal Canoe Foam Blocks for all pre-installed factory cross bars. Either version will work with round and square shaped cross bars. Includes a handy mesh storage bag and all necessary hardware and straps to secure a single canoe. Comes with a Yakima Lifetime Warranty!