Preformed, anatomical trays that follow the shape of the teeth to achieve an ideal fit. When the trays are loaded with fluoride gel and placed in the mouth, they provide complete coverage of the teeth, saving product and preventing excessive swallowing of the material, a common issue with poorly anatomical and shapeless trays. They are available in double and single formats. The single trays are handled separately; however, the double trays allow for comfortable handling of both arches at the same time. Both types are available in three sizes: Large (adult), Medium, and Small (child). They come in two thicknesses: Premium (white) and economical (green). They are made of expanded polyethylene approved for food use.