Opalescence Go 15%<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> New Ultrafit tray Material which adapts to your teeth better than Treswhite Supreme = WHITER TEETH </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> UltraFit tray's superior adaptation ensures the maximum amount of gel stays in contact with the teeth during whitening </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Kit includes 10 upper &amp; 10 lower trays </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> UltraFit tray's superior adaptability ensures that the maximum amount of gel stays in contact with the teeth during whitening. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> 15% Hydrogen Peroxide - Wear only 15-20 minutes/day for 5-10 days </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41RoC2TWGbL.jpg" noproxy>