This was my first purchase from Wayfair and I ordered this mattress after reading reviews of a few others and this one came up tops. 
I placed my order on the Friday and it was delivered on Saturday the next day with full tracking available and a 1hr time slot for the delivery. 
The mattress was rolled up in quite a lot of plastic but it’s exactly as ordered. My daughter suffered alot with being uncomfortable on her previous mattress with it being a very heavy thick coil one, this is why I opted for the memory foam and she’s had peaceful nights sleep so far and says it’s comfortable to sleep on.
It’s not a thick as her previous one but it’s light and alot easier to lift and change the sheets with this mattress. 
If you’ve been considering then I urge you not to anymore as this one is not a let down. 
I have taken out the cover aswell at the same time of purchase and paid via Klarna to help spread the cost.