Welcome to Pro Power Drive Systems!
When I got mine the elastic was kinda mested up. I called Batter Up/Pro Power Drive Systems and they explained they had some defective material that slipped by. They took my info and sent me another one ASAP! My son was throwing 86-88. After 2-weeks of long toss and practicing on the mound with it, he is now at 90-92 with less effort, hits his target better and now has minor league offers !!! His fast ball isn’t flat anymore and has more drop on his changeup. All I can say is this Power Drive Pitch-n-Throw Brace is Worth EVERY