Feature 1Easy to Carry: Easy to use, easy to carry, scientific and reasonable design and structure, we can carry it when we go out 2Adjusting Lanyard: Adopt adjusting lanyard and free retractable shoulder strap to meet the needs of people with different body types and heights. The sealing of the sphere is tight, no air leakage, easy to inflate 3Help People to Train: Use it, can synchronize the body and arm, establish excellent swing habits, effectively help beginners to conduct standardized gesture and movement training 4Wide Application: Adjustable smart swing ball has strong practicability, very suitable for playing enthusiasts and learners 5Material: Adjustable smart swing ball made of PVC, rubber, durable, not easy to damage, to provide you with excellent use experienceItem Type: Inflatable Smart Swing BallsProduct Material: PVC, RubberWeight: Approx. 189g / 6.7oz .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; }Package List1 x Inflatable Smart Swing Balls1 x PumpNoteThe pump color is shipped randomly, without gas delivery