i am pretty sure he just uses white kitchen towel lying around his house and just wraps it around his racket's handles on the day of the match
Yes, Peter Hoeg Gade always uses the White Towel Grip in his rackets. It has something to do on its better sweat absorption. Anyone notice the racket grip of Lin Dan? It has been the same ever since. It is not branded and sponsored but a genuine sentimental trademark of his.