Micarta, a composite synthetic material made of linen or paper with epoxy resin is another commonly used handle material. This is very strong, extremely durable and light. This comes in glossy or matte finish for grips and can be extremely durable. These are one of the best choices for tough heavy duty knives. Paper, linen and denim micartas are available for different degrees of toughness. Micarta handles also come in many different bright colors. Many different polymer materials are available, the best among them being ABS which is a high strength polymer that can be molded very easily and kraton - a springy polymer, mostly used as a flexible inlay in the grip. Fiberglass reinforced nylon (FRN) is a polymer that can be molded using injection molding.