Tooth Whitening Strips withGlobally initiativeelastic gel 4 technical breakthroughs of Onuge Tooth Whitening strips 1. Scientific formula with no harm to the enamel 2. Soft gluing and comfortable fit 3. Quick and convenient application 4. Whitening your teeth truly and effectively Benefits of the new Onuge elastic gel tooth whitening strip:1. Consistency and viscosity can not be reached by wet strips 2. Excellent tooth cohesion consistent with dry strips 3. Better tooth whitening effect than dry strips 4. More refreshing mouth feel 5. The Onuge elastic gel tooth whitening strips is highly transparent and invisible during use. 6. In a single use, it can take effect in almost 90% of users. Double gel strip:Upper: 70*10mm, Lower: 60*9.3mm (narrow design) Double gel strip:Upper: 80*15mm, Lower: 65*19mm (wide design) Double gel strip: Upper: 80*15mm, Lower: 55*17mm (wide design) Double dry strip:Upper: 80*15mm, Lower: 57*17mm (wide design) Double dissolving strip:Upper: 80*15mm, Lower: 57*17mm (wide design)