At first we were pleased. Fitted perfectly was comfy. However around nine months later I've seen that the mattress had become discoloured! A sort of yellow colour. As can be seen in the pics above. There were stripe like marks left by the Mack & Milo sleigh cot bed. Not sure if this was due to the mattress or the lack of quality of mattress but it must have been due to the mattress. However where there was a small sheet in the middle ( see pic) when I lifted that, the mattress retained its original colour. They should have spread that sheet all across that mattress to prevent future discolouration but unfortunately they didn't. Not happy with this at all