Constructed from durable natural rubber. Mats are available in 20kV to 50kV. Standard widths are 24", 30", 36", & 48". Standard thicknesses are 3/16", 1/4", 3/8", & 1/2". Sold per foot, cut charge of $65.00 will be added for any length under 75'. Not accepting orders online, contact customer service for ordering.