We got ours from BigW years ago and it's still going. Has a small hole on the side but we have put tape on the side and it stays up all night. You just need to replace the tape every year so so. Ours is a queen and probably the height of a double bed mattress. When we were camping (2 months) we had our sleeping bag that we put on top, nice and soft then the sheet and slept under a doona.