A small physical helping-device, to help hold the correct grip on a badminton racket
You cannot get around the fact that learning the correct grip is extremely important. At the same time, people who have worked with teaching the correct grip to beginners know that it has some challenges and takes a considerable amount of resources.
Tested and recommended by DGI badminton (DGI is together with Badminton Denmark the official Danish associations behind badminton in Denmark).
Designed and developed in cooperation with DTU (Danish Technical University), and with feedback from a lot of Danish top-coaches - see which here
Tested on hundreds of youth players at all levels
Recommended by a lot of top-coaches - see some of them here