What a great training aid. I’ve always been hindered by an inactive chest. Not only has this helped with chipping and pitching, but I’ve incorporated it into my full swing on my takeaway. Within an hour of using this, I was sticking 20-30 pitches. I shag a tube (23 balls) with sleeve, then shag a tube without it. I’ll do this 2 or 3 times a day. I highly recommend the FLYT sleeve!