This Arc Mobile Education Chair is equipped with a brace for additional support and 4 castors for easy mobility and maneuverability. The chair is also fire-retardant and contains a microbial additive for added safety and hygiene. The UL94 V-2 rating ensures that this chair meets high safety standards and is fire-retardant. Upgrade your classroom seating with our Arc Mobile Chair and enjoy the benefits of a comfortable, durable, and safe educational chair that is also mobile and easy to move around.