40/50/60LBS silicone jaw exercise ball jaw separation jaw trainer face face muscle training device jaw chewing ball training

Product information: 1. Adjustable flexibility, provides three different resistance levels (40 pounds white, 50 pounds gray, 60 pounds black), suitable for users of all experience levels, enhancing continuous improvement. 2. Through upgraded fishbone design, it provides balanced firmness and excellent flexibility, allowing you to exercise facial muscles more effectively with guaranteed durability. 3. Our cartilage exercise machine is made of food-safe silicone that is 100% BPA-free, ensuring users' health and safety. It is also very easy to clean. 4. Lightweight, easy to carry, comfortable, and practical. Our jaw trainer is designed to be small and lightweight, making it ideal for carrying to train muscles. No matter where you are, you can easily incorporate it into your daily life.