Compatible with a wide range of impression materials, DEFEND Impression Trays offer a system of holes and perforations to optimize flow and retention of materials.  The disposable, preshaped trays can be easily trimmed or flame-softened to adjust for a custom fit.  Plus, these impression trays offer non-slip grips to facilitate clean removal.  Available in 14 sizes, DEFEND Impression Trays are packaged with 12 trays per bag.