What Our Gearhead® Experts Are Saying:"The Dyno X gives me all the benefits of the original Square Top but with more forgiveness in the shaft. My elbows thank me after long days, and that Squaretop grip never slips."Evolution improves proven designs without losing their essential character, which is exactly what Sawyer accomplished with the Square Top Dyno X Oar's hybrid construction. Carbon fiber X-Weave fiberglass reinforcement provides more forgiving flex than full carbon while maintaining the counterbalancing properties that made the original Square Top legendary among serious rowers.