Crest 3D White Supreme FlexFit Whitestrips, 42 Strips (2 pack)

Crest 3D White Supreme FlexFit No Slip Whitestrips Dental Whitening Kit: Includes: 42 strips for upper and lower 21 treatments total Use once a day for 1 hour Crest's whitest white for a multi-dimensional smile Exclusive FlexFit technology design stretches and molds to custom fit your unique smile For professional level whitening with a comfortable, no slip experience that stretches to cover 30% more of your smile Advanced Seal Technology's no slip grip stays put so you can talk and drink water while whitening teeth Lasts 18 months & beyond