Upper Arch Impression Kit but the outer acrylic shell

but the outer acrylic shell will help it last longer than softer guards

The kit contents will provide enough material for approximately 7-10 whitening sessions (upper and lower teeth)

Requires additional lower impression

This kit includes everything needed to take an impression of your lower teeth

Upper Arch Impression Kit but the outer acrylic shellThis kit includes everything needed to take an impression of your upper teeth. Several sizes of trays are included with enough impression material for re making the impression if necessary. Also included is a postage paid return envelope for returning the completed impression(s) to BITEKNIGHT Labs.