Stainless steel massage ball $ 19.10 Material: ABS/304 stainless steel/gel Product size: base diameter 8.3cm, height 7.5cm, ball diameter 7cm White box packaging size: 10.810.88.2cm Recommended reason: This massage ball is filled with special liquid and undergoes a special sealing process. The massage ball can massage the shoulders, back, waist, legs, arms, etc. to relax muscles and muscles.