Teufelberger shaoLINE has a Dyneema/polyethene monofilament sheath with a monofilament polyethylene core. The PE monofilaments make this throwline more abrasion resistant and prevent the cover from getting roughened up. Thanks to the polyethylene in its core, shaoLINE is not susceptible to forming knots or kinks, but you do need to be careful with storage. Teufelberger shaoLINE is the perfect throw line for efficiency and accuracy. Presented on a unique wooden 'reel' - you are bound to find a use for it - it's too good to throw away.