Description 100% brand new, high quality Fitness ball material: silicone Color: pure black, pure blue, pure red, square white border black, square white border fuchsia, square white border red, square white border blue Dimensions: 3.6 cm x 3 cm x 2.5 cm Feature: All-round exercise: Through thorough exercise, you can use more than 57 facial muscles to gradually strengthen and shape your chin, face and neck! Innovative equipment: with a resistance of 20 to 50 pounds, chisel and sculpt your chin, giving you the best look ever! Long lasting: This botulinum toxin and facial filler can only be hoped to last. Fitness balls and facial toners are suitable for anyone who wants a healthier and more toned appearance. Convenience: Hands-free exercise tool, you can easily take it anywhere and use it when you have time. Use it in the car on the way to work, in front of the computer, while watching TV or cooking food at home, the list will continue to display... Fast: It only takes 10-15 minutes a day. Safe: made of food-grade BPA-free silicon Both men and women can use it. Easy to use: 1. When boiling the product, place the entire product in boiling water. Just leave it here for a maximum of 10 seconds, preferably 8 seconds. Then rinse the product with hot water. 2. After boiling the product for 8 to 10 seconds and rinsing the hot water, place the product on the teeth, and then gently press down on the white bite strips to mold them into the most comfortable shape. Quality first, provide the best service. Customers are our friends. Stylish design, 100% brand new and high quality! Package Included: 1pcs jaw muscle training device Note: 1. For photos, please allow slight color difference 2. Due to manual measurement, the size may be different