1- Made of a unique formula of Polymer Gel that is defined as Semi Liquid Gel, with full liquid characteristics yet in a solid form. 2- Hypoallergenic, Latex Free and Silicon free 3-cushion pressure from CPAP Mask Straps against back of the head. 4-Enable you tighten CPAP Mask straps more without any discomfort. 5-Enhance the chance to create a good CPAP Mask Seal without any pressure pain on back of the head. 6- Great asset if you have any neck problems yet you need to fasten mask straps tight. 7-Prevent morning headache from tight mask straps. 8- Pair of Gel Pads both are 2"X8" and 3/8" thick with tapering both ends in order to fit under mask straps without any bulky feeling 9- The liquid like gel will mold , shape up and sink inside the sleeping pillow so as not to cause any discomfort during back sleep.