Our Adjustable Snap-on Dentures Contains Polypropylene. Its Area Is Easy to Use, Cheaper and Non-Invasive. Its Usage Is Simple: 1. Soften Dentures with Hot Water First. 2. Wear the Softened Dentures in Your Mouth. 3. Bite the Bullet and Adjust Dentures. 4. Cool and Fix Dentures in Cold Water. Its Material Is Very Strong, Which Can Be Bitten without Affecting Daily Eating Activities and Regain the Power of Smiling.