Quoting Mama*AtoZ:" What and see what LO will accept sleeping on. Some will refuse a hard surface (wouldn't you? especially ... [snip!] ... and cosleeper travel cot type one were the biggest waste for us. I sold them and we coslept properly, it's been amazing "
Quoting how khuntastik:" Where do you get a mattress from?"
Quoting JJR's Mommy +1:" amazon and walmart sells play yard mattresses."
Quoting Jo&M:" I ordered mine off of Amazon. When there's a sale it's the best price."