The effective sleep surface is only the middle 2/3rds of the matress. The outside 1/3 slopes downward, and wants to roll a back sleeper off the side.

Very comfortable-We have only had it for 6 days. So far we have enjoyed the product.

Just got this mattress.

The most comfortable Masters I’ve ever spend time on!

Good ,not sure after a year or years, but so far it's pretty good for me for 3 months

My wife got medium I got the firm with adjustable beds we love them.

Hopefully gets some good night sleep

Just got the mattress and pillows today. Still allowing it to air.

Firm and comfortable

Nice mattress comfort.