Yonex Poly Tour Air Reel is a co-polymer monofilament with an elastic HR polymer additive. The result is a control string with impressive shock-absorption. In fact, this is the softest poly string by Yonex. This string also has great snapback for added ball rotation. Big hitters looking for a control string with above average comfort should love this one. Gauge: 16L/1.25mm Length: 200m 656 ft Composition: Co-polyester Monofilament (finished with high polymer polyester blended with a HR Elastomer) Color Blue