Fourth generation sixth generation jaw exerciser facial masseter silicone exerciser slimming facial masseter ball lower

【 Product Usage 】 A facial exercise product that helps to strengthen and regulate facial muscles. 

【 Product Material 】 Food grade silicone

【 Product size 】 2nd generation: 4.3 x 3.6 x 3CM
                              6th generation: 3 x 3.5 x 3.5CM
                              4th generation: 3 x 1.3 x 1.1CM
                              7th generation: 2.8 x 2 x 1.8CM