Our Thermoform Bleaching Trays are very soft and comfortable to wear. This is because our bleaching trays were designed expressly for dental bleaching and no other purpose using a special blend of new polymers. Many other trays on the market are made from hard plastics that cannot be molded effectively to the teeth and are extremely uncomfortable to wear. Unfortunately, Many companies have used methods that are designed to be used for mouthguards instead of dental bleaching trays. This is a very bad thing to do because athletic mouthguards are designed to brace teeth for impacts instead of applying dental bleaching gel in a consistent, uniform method while maintaining the comfort of the bleaching tray