Reaction ball is designed to bounce unpredictably and train athletes to to the unexpected. This tool develops eye/hand coordination and improves reaction time and accuracy. Perfect for use by professional athletes that are fine-tuning their skills, to youth athletes that are developing their technique. Features - Color: Random Color.- Material: Silicone.- Size: 5.50X5.50X5.50cm/2.16X2.16X2.16in.- Reaction ball is designed to bounce randomly, so athletes can their hand-eye coordination and improve reaction time.- Train with the reaction ball to prepare for any sport. Improve alertness, and agility.- Athletes honing their skills to perform in baseball, softball, football, soccer, or hockey games can decrease their reaction time.- Train by throwing the reaction ball against a wall or work with a partner to create drills with bad and unexpected flight paths.- Not only is this item a great way to train for all sports, but it’s also an entertaining way to play with your dog, kids, or friends.Packing list: 3 x agility balls Z