Hello!

As it turns out, nearly all of the sheets for pack n plays are fitted sheets. There’s not much in the way of zippered covers.

They do make this for crib mattresses though: https://aax-us-east.amazon-adsystem.com/x/c/QirfEngcNZlisWAmLzBzPFgAAAFrQYAOYwEAAAFKAVlPt1Q/https://www.amazon.com/QuickZip-Crib-Sheet-Set-Zip-/dp/B000RJ9TCY?creativeASIN=B000RJ9TCY&linkCode=w61&imprToken=fH60RqvgaFStQDY74Pw9Vw&slotNum=0&tag=experiencedmommy-20. You could try it out if you have a thicker pack n play mattress. Just make sure there’s not too much extra fabric, which creates an unsafe sleep space for baby.

In the end, it looks like most parents rely on a waterproof mattress cover with a longer skirt that fits underneath and a sheet with a good elastic band. Between the 2, they get the job done.

If you want a one piece only, try this: https://aax-us-east.amazon-adsystem.com/x/c/QsJnUjROnrJXdGCJlP6l_ycAAAFrQYQhfQEAAAFKAXpvOLQ/https://www.amazon.com/Elys-Co-Waterproof-Quilted-Mattress/dp/B07Q623MQQ?creativeASIN=B07Q623MQQ&linkCode=w61&imprToken=Axjrxj1OVrRbqqDZCkeIqw&slotNum=0&tag=experiencedmommy-20. It’s got a sheet and a waterpoof layer together in one piece.

I hope you find what works for you! Thanks for reading and commenting!