these are our favorite and most used covers. I've tried dozens and these are the only covers that don't leak or wick with my heavy wetting toddler. I love them! he leaves them on and I bought most that we have for $5 used, but even knew i think they are around $8-$12 each, so very cost effective. the first used ones i bought have stood up to almost a year of heavy use on top of what their use before I bought them and they are still going strong. great dependable and durable cover.