... 1m,3m,5m two layers compound material ;upper material is "Polyester tricot shoe fabric " pp non woven ;the back one is spong ... get confirmedSpecificationsUsed in: lining, insole, cushion,chairs,shoe insole,shoe upper. Thickness: 0.5m,0.8m,1m,3m,5m ... Soft to fit Used in: : lining, insole, cushion,chairs,shoe insole,shoe upper. Good breathability. Durable. Environmentally-friendly. no azobenzene (plumbum. ...