New for 2019, the O'Brien Ratio has everything a pro rider needs, but is truly ideal for beginner to intermediate riders looking for a predictable 3-stage board with explosive pop off the wake. Designed with 4 molded fins as well as tracking channels, the Ratio provides a smooth ride with plenty of hold on the water. The variable beveled edge keeps the midsection of the board catch-free and tapers towards the tip and tail for added bite when edging. This easy to ride board is perfect for building fundamentals, improving confidence, and enhancing progression.