Feature:   1. INDICATIONS: For symptoms such as restricted mouth opening and masticatory muscle atrophy after radiotherapy for head and neck tumors.     2. FUNCTION: Helps to increase the distance between the incisors, improve the difficulty of opening the mouth, and assist in the recovery of TMJ disorder.     3. MUSCLE MASSAGE: This mouth muscle trainer helps activate and massage your facial muscles, which increase blood and oxygenation to the face.     4. SOFT SILICONE: Our jaw trainer is made of soft silicone, which will not harm your mouth and does not contain any chemical harmful substances.     5. TIPS: As the product is made of silicone, the material is soft, please use your fingers to hold the handle at the end of the concave, to facilitate the fixation.             Specification:                       Item Type: Jaw Exerciser  Material: Silicone  Use: Improve the difficulty of opening the mouth                               Package List:               2 x Jaw Exerciser         or 1 x Facial Exerciser