ideal for opening the upper and lower arch , convenient for operating . L, M , S type , fit for different people
include 3PCS of 3 sizes (L M S)
Size : L : 39.5*39.5*20.4mm (Purple)
M : 34.5*36.5*17mm (Green)
S : 33*28*17mm (Yellow)

• Comfortable and flexible silicone
• resistant to high temperature 121℃

Comfortable and flexible siliconezhengzhou smile equipment co., ltd