For auction we have the following, listed as used as the box has been opened but this was never actually used as I received it as a gift but did not attempt to use it.YMX BOXING Reaction Ball on String - Fight Ball with Adjustable Headband, Soft Foam Balls - Improve Hand Eye Coordination, Reaction Speed, Focus, Accuracy - Cardio Sports Exercise EquipmentAbout this item✅ FOR NEWBIES & PROS - Our Training balls allow anyone to train, including kids and the elderly! The Primary reaction ball has a lower bounce speed, while the Advanced training ball bounces like a regular reacting ball.✅ IMPROVE REACTION TIME - This boxing training ball boosts your reaction speed, timing, and punching accuracy, making it an excellent training tool for boxers and MMA, muay thai, and kickboxing fighters.✅ SNUG FIT - Our training ball features a fully adjustable elastic headband, providing a comfortable fit for kids and adults. Train without worrying about the headband falling or slipping off.✅ BURN MORE CALORIES - Just using our reflex training ball for 15 minutes per day can burn off more than 200 calories, allowing you to hit your fitness and weight loss targets in less time.✅ TRAVEL-FRIENDLY SIZE - Our training ball fits easily in your gym bag, backpack, or pocket, allowing you to train anytime, anywhere. It is also made of durable materials that will endure daily use.