Hula hoop is a traditional exercise to keep fit. This hoop contains 24 magnetic massaging ball and 16 rough roll wheels， massaging waist more effective to burn calorie and lose your weight. Features:Easy to combine， durable， portable and convenient.Including eight tubes connected to a 98cm hoop in diameter and one knob to disconnect.24 massaging magnetic balls and 16 rough roll wheels on the inner ring. (3 balls and 2 roll wheels on each joint)Size can be adjusted by the amount of connected joints.Great equipment for exercise and weight loss.Specifications:Material: PP plastic + magnetColor: Orange + pink + red + greenDiameter: 98cm / 38.6inWeight: 1150g / 40.5ozPackage size: 41 * 24 * 8.5cm / 16.1 * 9.4 * 3.3inPackage weight: 1362g / 48ozPackage List:1 * Hula Hoop (eight joints)1 * Knob