Let me start off by saying we just got off wonder, the best bed we have ever had on any royal ship. We always take a topper with us since they stopped using on ships. It was not sanitary. We have cruised all oasis class multiple times and wonder was the best sleep we have had. We did take our topper and I think we would have been ok without. We were in a regular ocean balcony room not a suite. We have left our toppers onboard but this time had no problem folding it up and putting in out big duffel bag.