Unleash a brilliantly dimensional smile with Crest 3D White Supreme FlexFit Whitestrips. They whiten as well as a $500 professional laser treatment to give you a megawatt smile. These Whitestrips bring the power of professional whitening to your home so you can get a brilliant smile quickly and easily. Our exclusive FlexFit technology allows these strips to stretch, covering 30% more of your smile* *vs. a non-flexing strip.