My bub has been sleeping in an amby hammock since she was 8 wks old and sleeps great, she occasinally gets slighty on her side but can't roll all the way, though she does on the floor. The matterese is not firm as but not soft either, hard to explain.

Just a question about the look alike ones, do the ends zip up or only tie up. The reason I ask is tha amby zips and ties at the foot end so that bub can't slip out the end once they learn to wriggle. however bub has only managed to wriggle down a bit of the way.

I brought mine out of desperation for sleep as bub would only sleep in bed with us (not sids safe) or in the bouncer being bounced the whole time. It has been a life saver.