Chroma Retainer Box - Orange Yellow, 3-1/8"W x 3"L x 1"H, Package of 12 Boxes. With hinged lid snaps. Heavy-gauge plastic construction. The Chroma Retainer Box is a colorful storage solution designed for retainers and mouth guards. Made with heavy-gauge plastic, the protective container is guaranteed durable and lightweight. It is waterproof and features a hinged lid snap that securely stays locked. Each pack includes 12 retainer boxes measuring 3-1/8 x 3 x 1 inch deep, available in different colors.