Glamza Hello Smile Mouth Tray and Optional Whitening Gel Upgrade your mouth guard with 1, 2, 3 or 4 optional whitening gels Emits a strong LED light for whitening accelerating Mouth tray can sit in your mouth without needing to hold it Quick and easy to use - wear for 20 minutes a day for the best results Buying Options: 5.99 pounds instead of 9.99 pounds for the mouth tray - save 40% 9.99 pounds instead of 19.99 pounds for the mouth tray and 1 gel  - save 50% 12.99 pounds instead of 29.99 pounds for mouth tray and 2 gels - save 57%  14.99 pounds instead of 34.99 pounds for the mouth tray and 3 gels  - save 57% 17.99 pounds instead of 39.99 pounds for the mouth tray and 4 gels - save 55%