Pack n Play sheet sizes (old vs. new)?

[tentoes]

My IL's have a PnP from about 15-20 years ago. It seems slightly larger than the new PnPs. Anyway, I went to measure the mattress for a sheet, found the measurement and went to Target to purchase the playard sheets they sell, I come home and find that the sheets are too small! Yet the packaging has the size printed on back and it's the same size as I measured! So weird.

Other than sewing one myself, does anyone know of play yard sheets that fit 'old style' PnPs?

Thanks so much!

[WatchingThemGrow]

I dunno about the sheet sizes, but I'd just take this as an opportunity to just buy a cheaper, newer PnP for safety's sake and say it was b/c of the sheet size issue.