USA Impression Trays offer uncommon value — the price of a disposable with the quality of a reusable tray and more. High- temperature resin construction is autoclavable to 250°F without distortion. Occlusal surface lines maintain space to eliminate bite-through. Rounded edges ensure patient comfort. Full perforation eliminates the need for adhesive. Non-slip handle with finger rest is marked for easy identification. Soft yellow color. Made in USA. #3 Medium Upper. 12 trays per bag.