For this price you can't ask for better, the material is very flexible and shiny. I suspect it will withstand UV rays for years to come. My application is always fresh water and cases like this have lasted over 15 years. At the same time, I noticed that the hard and blunt covers tore very quickly. The only reason the softer, shinier ones finally failed was because a gang of squirrels gnawed on them during storage last winter. I contacted a local hawk who needed to support his family to take care of the rodents to keep PETA from picketing outside my house, so I expect these new mats will last 10+ years.