I used this after giving birth. Apart from the worn area shown in the fourth image, the condition is good. Diameter: 40cm Thickness: 7.5cm Color: Black * It has a firm density, preventing sinking when sitting. * It has a Velcro strap to secure the cushion and prevent it from opening when sitting. - Color: Black - Shape: Ring cushion - Strap: Yes - Material: Synthetic leather Thank you for looking.