... memory foam; bottom material is black 20G tricot fabric2)Color: all colors available in hexagonal mesh fabric and tricot fabric and memory foam3)Thickness ... : 2mm, 3mm,4mm,5mm,6mm,7mm,8mm,9mm,10mm in memory foam and so on4)Width ... : 44",54",58"5)Kinds of tricot fabric: 20G,24G,28G,32G,36G,42G6)Width and thickness ...