Our organic wool moisture wraps use our ecowool which is carded and certified organic during this processing by Oregon Tilth. It is then felted at a west coast felting mill. This pad naturally resists liquids to protect your mattress. No polyurethane or other synthetic backing is put on our wool. USA wool is not quite as soft as our Merino Wool Moisture pads but the price is a bit better. Zips around a 6" mattress to protect from moisture, dirt, bed bugs... Machine wash delicate or hand wash-cool; hang dry.