Head Sonic Pro Edge 16 is an ultra playable co- poly with impressive comfort and liveliness for a monofilament control string. This one provides easier depth than a traditional polyester. Thanks to it's 5 sharp edges, the bite is incredible. Our TW playtesters found it remarkably easy to shape their shots with loads of spin. Sonic Pro Edge is ideal for aggressive baseliners who like to impose their will with heavy combination of pace and spin. It's also not a bad option for the player who is looking for a comfortable entry point into the magical universe of polyester.