The working mock-ups felt very promising so we tested them with youth, high school and college players and coaches over the course of several months. The response was better than anticipated. Players of all ages wanted to know when they could purchase our training weights. These reactions convinced us that we had to hire professionals to develop the design and molds. After many hours of research and communicating with several designers, we were very pleased to finally work with the knowledgeable and helpful team at David Wolfe Designs. They did a fantastic job with the drawings and renderings.