Miss Mayhem Kneeboard S21 it's packed with features and Partner Warehouse it's packed with features and ready for whatever you can throw at it It brings the added energy absorption of zonal Koroyd® and the advanced angled impact protection of MIPS® to let you focus on ripping high speed arcs in the alpine and chasing untracked lines in the trees the KD Mayhem features a balanced squared off outline that’s delivers superior edge hold thanks to an improved contact with the water KD Sports have blessed it with their newly crowned diamond technology that generates lift by forming pockets of air under the front and back of the board