brand new punching bag with an inflatable ball approximately 10 inches in diameter, a pair of boxing gloves, inflator, a durable base with a spring-loaded adjustable shaft. The spring can be easily returned to its original position. Our free standing boxing bag is designed for optimal and safe use with a strong, durable spring at the base of the shaft. This allows the spring-loaded punching bag to spring back into place after every blow. Adjustable height stand for your convenience. The height of the punching ball holder can be adjusted from 47" to 60" to suit personal preference.