X-tra smooth, and X-tra sensitive, Fluorocarbon XS transmits information from your lure to the rod better than any other fluorocarbon line. Extra strong, Fluorocarbon XS delivers solid hook sets at extending distances while maintaining exceptional abrasion resistance. Virtually invisible underwater, XS is the go-to line when targeting pressured or skittish fish, or when fishing gun-clear streams for wary salmon, trout, and steelhead.