Inside layer:siliconed internal lining Middle layer:yarn mesh Outside layer: kraft paper Capacity: 25 kgs Max. Temperature : more than 200 c (centigrade degree) The bitumen will not stick on the inner liner when dumping Pile up: up to 200 layers max. Under certain conditions Packing: need not carton packed Especially for hot blown/oxidized bitumen packing Capacity: 25 kgs