A hard naturla fiber, manila is especiallly resistant to sunlight. It is very popular for public utility, construction and reparir because it will not melt on contact with hot wires or equipment like synthetics do. It will burn, however, if the temperature is very high or if the rope is in contact with the wires/equipment for an extended period of time. Manila holds knots firmly and stretches very little. It must be stored dry to avoid midew. Chemicals will cause it to deteriorate.