O'Brien System 2010 Wakeboard Designed for the intermediate level wakeboarder but packed with high performance features, the System will make learning new moves easier. Predictable continuous rocker line and single long base center fin provide a classic on water feel - with added control enhanced by double barrel channels exiting the tips of the board. 135cm 2.25" continuous rocker, 16.75" waist width, 18"-24" stance width, rider weight 100-180lbs.