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: As shown. - Material: Silicone. - Size: 6.50 x 6.50 x 6.50cm/ 2.55 x 2.55 x 2.55 inch. - 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 its also an entertaining way to play with your dog, kids, or friends.