The shiny, black exterior is how Gorilla Tape withstands the elements better, with tougher abrasion resistance, a tighter barrier against moisture and higher UV qualities. A tight-weave reinforced backing, woven for improved conformability to surface features, contributes to Gorilla Tape's unique heft and unsurpassed ease of use. Incredibly strong - yet can be ripped by hand, another Gorilla advantage. The thicker the adhesive the better the tape. Double thick agressive adhesive, laid on extra thick, fills in gaps for a stickier grip - especially in applications involving rough, porous or imperfect surfaces.