Features:- Double bearing cardan wheel, the baby will make no noise when playing, and will not affect others.- Sensory training is to enrich children's sensory stimuli in the form of games, which can improve children's brain tissue coordination, basic activity and social communication skills, and help to cultivate children's good emotional interest, will, temperament, etc.Specification:Material: PlasticSize: 39.5*43cm/49*58cmPackage Included:1 * Children Balance Board1 * RopeNotes:1. Manual measuring, please allow 1 ~ 3mm error, thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.