The strongest of all our Traditional Foam hot tub covers. Great for snow loads, children and large pets. Our walk-on spa cover easily holds up to 1000 lbs. The 3″ flat spa cover is reinforced with Aluminum sheets on top and bottom of foam for superior strength. Includes double top stitching, steam stoppers, two handles and four tie downs with keyed lock fasteners. All of our spa covers are UL approved and manufactured using only top quality materials including marine grade vinyl and energy efficient polystyrene inserts. Inserts are heat sealed with a poly vapor moisture barrier to protect against water absorption. UV inhibitors in both the vinyl and thread prevent premature aging of your spa cover.