Welcome to our store！</br> 1、Rubber Material: The irregularly shaped ball is made of thick rubber, which is strong and durable. 2、Two Styles to Choose: The reaction bounce ball feels comfortable, there are two different types in one set, which can be used according to your preference. 3、Main Function: The random bounce mode of this reaction ball can improve hand eye coordination and reduce reaction time. 4、Mini and Portable: Small in size and light in weight, the reaction ball is easy to carry, very convenient to use. 5、Widely Used: As an exercise appliance, the reaction ball is used for speed, agility, strength, running, football, volleyball, basketball, baseball, football and all other sports, fitness, weight or cross training. <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Reaction Balls Material: Rubber Product Weight: Approx. 138g / 4.9oz <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 2 x Reaction&nbsp;Balls&nbsp;&nbsp;&nbsp; Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>