G.S.P (Gel Spun Polyethylene) is by far the strongest thread on the planet after our Veevus thread. In difference to other brands the Veevus G.S.P. thread has been designed with a slight twist preventing it from opening up, and thereby making tying with it a breeze. It lays completely flat and is the smoothest thread to spin hair with. It is currently available in 2 colors in the following sizes, 200 Denier, 150 Denier, 100 Denier and 50 Denier. Also Veevus are the first to offer a 30 Denier GSP(This size is available in white only). Each spool contains 75 m which is67% morethread than offered by anyone else in our industry.