Optimist Hull Cover is fabricated using Harbor Time Edge cover material. Harbor Time Edge is 11oz coated polyester fabric provides excellent UV protection. Superior heat reduction rating and 7 year fabric warranty makes this fabric industry favorite. This cover has a series of high-density foam pads incorporated into the cover so the boat cannot be damaged when placed on the ground or in a trailer. Our cover is secured with a shock cord skirt and a series of 1 inch webbing straps which fasten to 1 inch side release buckles. All of our covers use marine grade products to resist UV and salt water conditions. Color refers to pad color. All covers made in Kinder Grey. Made in the USA.