REFLEX BUILDER; The PowerNet Reaction Balls improve your reflexes with random bounces; Practice catching bad hops 2 SIZES; The reaction balls with a large and small size; Each size is a different level of difficulty; Great ball to add to your training equipment bag FUN WHILE TRAINING; Challenge yourself and friends to see who has the best reaction time while improving your skills MULTISPORT; Perfect for baseball softball boxing and any sport that requires speed control and tracking; Eliminate being flat footed and stay ready on your toes tracking the random bounce ball DURABLE AND PORTABLE; This training tool is designed with durable rubber to allow you to train anywhere; Built to last the abuse of many training sessions; Transport anywhere; Fits in your equipment bag without taking up space