24 patient kits. Each kit contains 5 trays; each tray contains 2 films: 1 upper & 1 lower.
Easy-to-use, 20% carbamide-peroxide, tooth-whitening film. Firmly holds whitening formulation against enamel. No slipping or sliding during use: molds to teeth. So comfortable: can be worn anytime or anywhere. Whitens teeth 5 shades in 5 days, on average. Should be worn for 2 hours per day.