Fiberfix is the reinforcement fiber to be used with Glufix. This self-adhesive fiber increases up to 10 times the resistance of a repair. In order to have a permanent, ultra-resistant, esthetic repair in a record time, you simply have to join the 2 parts of a tear together with the Fiberfix and after, add a layer of Glufix over it. Size: is two four strips, and two inches wide, so can be cut thinner if you need more length.