The Fidget Active Stools from Symple Stuff encourage twisting and rocking for increased movement and concentration throughout the day. Available in 37.5 cm and 57.5 cm heights to suit a wide range of users. Comfortable contoured EVA foam seat cushion and reinforced ABS plastic stand. Light for easy portability. An anti-skid rubber grip on the base provides additional stability during movements. Ships are fully assembled and ready to use. Rated up to 136 kg.