I have own a 2x2 mtr spa and was using a tarp & shadecloth to cover it. This worked ok except in strong winds where the covers would be tugged loose. As i used nylon rope to tie down around the outside. It was a bit of a pain to take off & on. I finally dawned on me to buy a proper cover! Selected the size and bought online from coverworld. It fits well and has two straps and buckles that hold the corners down which unclip easily. Its a breeze to take on and off, and does not come loose in the wind. An excellent choice and improvement. Was reasonably priced with free shipping too. Well done coverworld!.