I've been wearing Clark's Sunbeats for years, purchasing a new pair every summer.  They're  great at first, but  all the cushioning gets flat in about two months.  I continue to wear them, though,  until they are essentially gone in other ways, then wear them as "houseshoes."

But these from Amazon, had NO cushioning right out of the box.  They were terrible--like walking on cement. They felt like a cheap imitation of the original Clarks shoe.

I returned them immediately for a refund.  They are worthless, save your money for the real thing.

Amanda