Commercial grade - made of a thick polyethylene scrim and heavy-duty copper grommets every 4 ft. making the cover highly resistant to punctures, tears, chlorine stains and chemical stains, in combination with these features, a black underside stifles algae growth
LAB-tested - every cover reaps the rewards of 20,000-hours of laboratory UV stress-testing: a UV stabilized compound that protects the cover from sun damage including: drying out, tearing and fading
