We at ultracool manufacturers the Celdek cooling pads, they are designed with high water-to-air contact area to promote water evaporation. Celdek cooling pads are made from cellulose sheets in a honeycomb structure. It has a higher saturation efficiency and much longer life span. Celdek cooling pads normally last 4-5 years depending on water quality. Currently we are producing 2 models of UltraCool celdek cooling pads 5090 & 7090 with the flute size of 5mm and 7mm.