Hip Ball Cushion with a ball to relieve stiffness in the buttocks, made of soft material for comfortable sitting. - Model Name: Hip Ball Cushion - Color: Pink - Features: Includes a ball to relieve stiffness in the buttocks - How to use: Place on a chair - Material: Soft cushion material I've used it about twice, but I don't have a chance to use it, so I'm selling it. The box is damaged when opened. It will be shipped with a plastic bag over the box. Thank you for your understanding.