Features: Low rebound material is ultra- thin, breathable and good elasticity. Effectively improve double chin, facial muscle relaxation and other problems. Use pressure massage therapy to improve contours, double chin and fat accumulation, etc. Ergonomic design, hook & loop design, adjustable from your own. Fitting your facial line tightly, suitable for all kinds of face shape. Mini size and portable, can be put in your makeup bag or hand bag. Specification: Item Type: Facial Slimming Mask Material: Stretch Polyurethane Color: Beige Size 1: (mainly based on the length of the chin and the top of the head to determine the half-covered size selection suggestion) M: 60-65cm/23.6-25.6in L: 66-70cm/26.0-27.6in Size 2: (brow arch - circumference behind the pillow) M: 54-58cm/21.3-22.8in L: 59-64cm/23.2-25.2in Weight: Approx. 18-20g / 0.6-0.7oz Function: Slimming Face and Preventing Wrinkles Package List: 1 x Facial Slimming Mask . Note: This product uses the safest physical method of face lift to improve double chin and prevent facial slack. It will be more effective to use it for more than three months, so there is no effect in the short term.