Redland Dental Products Side-less Posterior Registration Trays comparable to Triple Trays and other market leaders, Bite Trays offer the highest quality and exceptional value. Bite Trays are made of a thin, durable occlusal mesh material. These Bite Trays offer a unique design featuring a rigid frame and thumb tab that is firm, wide and easy to grip. Individually wrapped to provide increased protection, single use Bite Trays facilitate accurate final impressions. Premium Solid Quality, Smooth Edges. For Bite Registration, impressions, and counter impressions.