The Gladiator Matrix Wakeboard has all the features you need for fun on the water. The sweet continuous rocker and center fin provide a stable platform for learning new moves. Molded side fins and huge double-barrel channels let the Matrix Wakeboard track on edge and explode off the wake. A great board for those just starting out in wakeboarding. 1.8" plastic fin. Matrix 135: 53.1"L x 16.8"W. For 100-180 lbs. riders. Matrix 140: 55.1"L x 16.9"W. For 140-230 lb. riders.