The Cover Guy Standard 4" Replacement Hot Tub Spa Cover Cal Spa models 84x84x8" Radius Corners - Brown AMERICA'S #1 ORIGINAL & BEST HOT TUB COVER - Over 22,000 happy customers every year choose The Cover Guy as the best spa cover to deal to reduce energy bills and eliminate waterlogging. The superior craftsmanship and design of our spa covers comes from over 30 years of manufacturing experience. CUSTOM MADE TO FIT LIKE A GLOVE - As soon as you've checked out on Amazon, our friendly team will be in touch to confirm your hot tub's specific dimensions and details so we can customize your replacement spa cover to fit perfectly. REDUCES YOUR ENERGY BILLS - Our cleverly designed hot tub covers pay for themselves in energy savings alone! With an insulation value of R14 and made from quality high-density foam and marine-grade vinyl, our lightweight spa covers are designed to lock in the heat and keep out the cold, while allowing rain, ice and snow run off. BUILT FOR MODERATE WEATHER - The high-density foam means this reinforced spa protector can keep debris out of the water while lowering your running costs! It also comes with 4 lockable tie downs strategically placed so you have complete peace of mind that your little ones will be safe around your hot tub. 7-YEAR WARRANTY - We're confident you'll be over the moon with your new durable and lightweight spa cover for hot tub owners. But to give you extra peace of mind, it comes with a 7 year pro-rated warranty.