... 80CM (customer size is available) When you shake flashing hula hoop,lamps will flashing automatically. Flashing hula hoop Material:PVC&PCSize:80CM (customer size ... way: blinkingBattery: 3pcs AG13,can be replaced.Flashing hula hoop have 8pcs lamps,red,yellow,blue and green,both of 2pcs ... . When you shake it,the lamps will flashing automatically. It'll increase fun when you do sport ...