Home Abdominal Muscle Training Fitness EquipmentProduct information: Applicable scenarios: running, fitness equipment, health massage, fitness and body shaping Color: Black rounds [get hassock], white belly wheel [get hassock], orange belly wheel [get hassock], black rounds and timing [get hassock]], white belly wheel and timing [get hassock free], orange belly wheel and timing [get hassock free]] Roller outer ring: non slip rubber Non slip inner ring: Engineering Plastic Packing list: Abdominal