Features: Our retainer cleaner foam can effectively remove 99% of residues and odor causing bacteria, and keep the retainer clean-. Smile as much as you- want. The smell is natural, without peculiar smell. Good product for your dental care and is gentle for your dental accessories. Wide application: the tooth guard cleaner is applicable to movable oral appliances. Retainers, mouth guards and dentures. Effectively remove years of stains, while keeping your teeth white and healthy. Our toothbrush cleaner is easy to use. First, take off your braces and fill them with foam. Then, spread the foam evenly with the nozzle to cover all areas. Finally, wait for 15 minutes and rinse the braces with water. (Do not put foam or liquid into your mouth.) Specifications: Material: Foam Package Size: Approx.3.8x3.8x13.2cm/1.5x1.5x 5.2inch Package Includes: 1x Retainer Cleaning Foam note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you- do not mind before you- order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.