we were gifted a like new tempurpedic lux adapt. after sleeping on it s couple of years, we started to question that some of the pain we had wasn't just getting older. we also didn't want to spend a ton of money on a new bed. after a few weeks of research that included price/value, reviews, coolness (we live in Phoenix) and health/safety, we narrowed the possibilities to a down topper or Viscosoft. we chose Viscosoft for the price point, odor free and quality standards. it did not disappoint. we immediately felt a difference. my husband, especially, saying the pain in his hips has gone away entirely. it does seem cooler, too, than our mattress.
it was easy to air out. it is tad smaller than the bed but I think it kind of needs to be in order to not challenge the sheet pockets. it fit a fine with the deep pocket sheets we already have.
a solid buy if you're not wanting to drop a few grand on a new bed.
side note: if you have a tempurpedic lux adapt, it helps to slip the bed upside down before topping it. we learned this from another review and they were right.