-Disposable. Molded of high density plastic. Excellent mechanical retention of alginates without need for adhesives. Six color coded sizes ensure accurate fit. 1 Pack Contains: - 36/ 3 Each Size (- Upper , Lower size 1, - Upper , Lower size 2, - Upper , Lower size 3, - Upper , Lower size 4, - Upper , Lower size 5. - Upper , Lower size 6). **For further product information, please contact Chat Support**