American Baby Company Waterproof Quilted Cotton Bassinet Size Fitted Mattress Pad Cover, White Price:  $11.70 (as of 18/10/2017 12:55 PST- Details)

Quilted waterproof protective fitted bassinet pad cover
Measures 15 inches x 33 inches x 4 inches, fits standard size bassinet mattress pads
4 inch deep corner pockets with elastic all around for a snug and secure fit