Andy also noticed the friendlier feel. He said, "Since it's on the softer side, Sonic Pro Edge is very comfortable on the arm. The lively feel contributes to this as well, because you don't have to be slugging the ball to get it to go somewhere. It's still a polyester, and it's not the softest poly, either, so it's not going to be the most arm-friendly string out there, but compared to most polys I'd say it's on the more comfortable side."