XPF and XPNF are light weight, self-fitting, monofilament sleevings designed to encapsulate and protect cable bundles and wire assemblies. These expandable sleevings adjust to irregular surfaces and contours, providing abrasion resistance and protection with a minimum of bulk and weight. Polyester ICO-FLEX is available in flame retardant (XPF) or non-flame retardant polyester monofilament (XPNF).