Boveda 62 Percent RH 2-Way Humidity Control， 4 gram - 10 Pack<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Boveda’s one-of-a-kind technology will add and remove pure water vapor--as needed--to maintain the desired relative humidity printed on the front of the Boveda. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Dimensions 2" x 2" each， Cycles in humidity are eliminated. No need to activate， maintenance-free. Shelf life: 2 years </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> We offer multiple RH levels to satisfy personal preference and to optimize the characteristics of various strains. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Boveda’s B62 is encased in the same sophisticated reverse-osmosis membrane as all of our other products， so your flower is still getting only 100% purified water vapor. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Preserve herbal medicine and other smoking material at 62% RH </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51CYoyKnFbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41E6-6iUbHL.jpg" noproxy>