Sheer White!TM 20% Carbamide Peroxide Whitening Film teeth whitening films: goes on easy; stays where you put it; whiten fast. Sheer White! is the most significant advance in teeth whitening in nearly a decade. The thin flexible moldable material closely adapts to every surface holding the whitening gel where it belongs - against the tooth surface. No leaking or wash out of gel. No slipping or sliding of the film. Comfortable, long-lasting wear. Even, effective whitening. Easier. Faster. Better.TMPackage Contents:5 Trays, each containing 2 teeth whitening films, 1 tool.