High-quality materials: plastic material frame, solid structural rib bottom, sturdy and , increased load-bearing capacity and durability, long-lasting. Ergonomic design: large foot area , textured with massage and roller, massaging feet can make you feel comfortable and promote blood circulation in the lower limbs. This office footstool is designed with four sturdy non-slip legs and will not slide on the wooden floor. Portability and versatility: The , portable and detachable design allows you to get ergonomic support anytime, anywhere. Help correct sitting posture and improve work efficiency. It is very suitable for adults and children to use at work and study, whether or in the office, or use the footstool under the table. Note:The color of the roller is random and cannot be specified. Colour:As Shown Material:Plastic Package Contents: 1 * step stool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.