Very lightweight & easy to trim to fit. Just installed. It will make a big difference in evaporation & temperature retention. Excellent purchase.

Fits just fine and hope it keeps heat in and evaporation down

A little hard to cut to fit just exact but nice for the price

It seems pretty perfect. I had to cut some corners off because my spa is a custom size and shape. But hopefully this will do the trick!! Only problem was my dogs decided to play on it while I had it on the lawn, flattening out, and they managed to get some claw marks on it. :-)

Easy to cut and install. I live near the Canadian border so I hope it will help this winter. I can tell the hot tub not running as much when it gets cooler at night so that’s a plus. 4 stars because it is thin and I don’t know if it really helps in the winter just yet.