Made of durable clear plastic for increased visibility, Double span cheek retractor is designed for hands-free use, Available in adult size or child size, Opens the oral cavity widely,without any pain, Protects the sensitive gums during teeth whitening treatment, Cheek Retractor C Type – L : 130 x 92 x 21mm, Clear, S : 97 x 70 x 15mm, Clear, Cheek Retractor Y Type – L : 126 x 57 x 51mm, Clear, Cheek Retractor M Type – Small, Medium, Large, Cheek Retractor O Type – Blue Large, White Large, 2 Pcs