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.

Hopefully gets some good night sleep

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.

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

Amazing, supportive, quality mattress.

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

This bed is like sleeping on a cloud. The kind you don’t want to leave in the morning. Best bed I’ve ever had

The most comfortable bed I have ever had. The plush top is perfect and does not need any other toppers.

Replaced a world class mattresss from 9 years ago with the series 4 black and have never had a better night sleep!!