Love My Crib via Amazon offers Prime members its Love My Crib Waterproof Fitted Crib Mattress Cover
with free shipping
. (Non-members can qualify for free shipping with orders of $35 or more; otherwise, shipping adds $6.48.) That's $25 off and the lowest total price we could find. It is hypoallergenic and free of phthalates, BPA, PVC, dye, latex, and lead.