buy now Feature:Product name: Jaw training deviceMaterial: Silicone (food grade)Weight: 10g/pcsSize: 3*1.5/cmPacking: opp bagColor: black, white,grey [High quality material] The exerciser is made of free food grade silicone. Non-toxic silica gel does not contain any chemical fillers or by-products, so you can chew with confidence. It is made of the same material as the baby... Continue Reading →