Catcher's Resistance Training (CRT) Belt + Catcher's Zone Mat BundleIntroducing the CRT Belt 2. 0 from KGS Baseball. The CRT Belt is a training tool for baseball and softball catchers who want to enhance their receiving ability and execute the same movements as elite receivers in the game. The CRT, or "Catcher Resistance Training" Belt allows for resisted receiving exercises to be completed in an efficient manner. Developed by professional baseball players, our patent pending design is a direct result of wanting an