Product Features Can be tied with zip ties, optional) High quality polyethylene knitted design Visibility Blockage: 85% Fabricated with 1.5'' double-side black binding Tape and brass grommets placed evenly 18'' O.C. on all 4 sides Double grommets on every corner edge for extra strength Prevents harmful UV sun lights from damaging for up to 90%, and fabric has a 2.5” enforced binding, so it’s able to hold up even in extreme weather condition.