Brought this a few weeks ago and it's very well made and much better than the clever spa cover. 
The lazy spa one is quite heavy and very well insulated, I know it's twice the price of the clever spa one but I think it's worth it. Seems to save on the heating of the hot tub, we have ares at 37 degrees and the heater does not come on that often so I think the cover will definitely pay for it's self. Would highly recommend this product.