The only downside is the weight of the mattress causing difficulty in making the bed. It is hard to lift the mattress to tuck the sheet under the mattress. Other than that I am totally satisfied with my medium mattress,...I love it.
The mattress is generally very comfortable although a little warmer than I would like but it is not an issue that causes sleep disturbance. It is supportive and my partner and I don't disturb each other when moving around. The pillow also gets warm but I now use a special cover which overcomes that discomfort.
I am more han happy to endorse the comfort qualities of the mattress.
Allow 5-6 days to adapt to the new feel seems my body was confused with the comfort level... at nearly 2 months with an option to adjust the individual comfort level I wouldn’t change anything
My only complaint is that the king single bed is so heavy I can't move it e.g need to move it out from the wall to make the bed.
Had the Sleeping Duck for a few months now and had no problems. Don't have valleys where we lay.
Price was good, delivery prompt (the delivery lady would have had trouble getting it out of the van).
I am still amazed how small a box it came in and how it opened out into a full size firm mattress. Just as well I didn't need to send it back.
Excellent service and delivery. Comfortable mattress which would benefit from having handles on the sides of the king size to facilitate easier positioning.