Really comfortable single mattress. However beware, it's 25 - 30cm thickness means that it is not great for a mid sleeper bed. We've had to purchase bed guards separately to protect our little one from rolling over and falling out of bed (as the mattress is flush to the highest wooden barrier.) The description on Wayfair could have been better. I'd advise you only to purchase for a standard single bed frame. We've decided to keep the mattress as other reviews indicate that returning and replacing items isn't as swift as it could be and we could do without the hassle. Don't think we'll purchase a bed on-line again :-(