Waterproof and extend the service of life to Marine fabrics.Restores water-repelling action to all marine fabrics. Contains PTEF polymers that help block damaging UV rays, dirt and deposits to help prevent fading and stains. An ideal way to extend the service life of new fabrics, too. Safe for Sunbrella, canvas, polyester and cotton fabrics. Won't affect color or breathability” of fabric.Key FeaturesFor boat covers, bimini-tops, sail coversDoes not change the color or feel of fabricSafe for all marine fabrics, including SunbrellaAdditional barrier to moisture and damaging UV rays