Mouth Opener Set: Cheek retractors help you see your mouth and teeth, allowing you to easily open your mouth. Protect Oral Health: This C-shaped mouth opener is widely used in home teeth whitening procedures, can open the mouth and keep the whitening agent away from the lips and gums. High Quality Materials: This C-shaped door opener is made of durable clear plastic, pollutant-free, environmental protection. The soft, smooth edge is ergonomic, conforms to the mouth and is very comfortable to wear. We ensure that your mouth has a safe, hygienic and quality dental mouth retractor. Package includes: You will get 4 beautiful C-shaped mouth gags, blue, each measuring 9.4 x 8 x 1.4 cm, to fit most men and women. so you can use it in different occasions. Widely Used: This C-shaped mouth opener is used in dental surgery and teeth whitening salons, and can also be used as a fun gift or play toy, smiling and laughing when watching friends. It is also a good game for family celebrations, parties or gatherings with friends.