Fangrui Product Details Features: High-quality Material: The Backflip Auxiliary Ball Is Made Of High-quality Pvc Material, With Thread Design, Even Pressure Release, Pressure-resistant, And Can Be Used For A Long Time. Safety: Provides Support And Stability During Backflip Exercises, Reducing The Risks Of Injury To Gymnasts And Athletes. Adjustables Shoulder Straps: The Exercise Ball Comes With Removable And Adjustables Shoulder Straps, Suitable For Both Children And Adults. Automatic Rebound: The Backflip Auxiliary Ball Is Designed With An Automatic Return Function. It Will Produce A Weight Less Feeling When Bouncing, Which Is Very Suitable For Backflip Training. Wide Application: The Backflip Assist Ball Is Not Only Great For Backflip Training, But Also Great For Waist And Abdominal Training, Stretching, Sensory Integration Training, Etc. Notice: 1.actual Color May Be Slightly Different From The Image Due To Different Light Effect 2.please Allow 1-3cm Deviation Due To Manual Measurement Description: Material: Pvc Size: