JML Trading via Amazon discounts the JML Waterproof Mattress Protector in the sizes listed below via coupon code "C9OKIA4E". Plus, Prime members bag free shipping. That's up to a buck under last month's mention, at least $4 off, and the lowest price we could find. It has a fitted sheet style. Deal ends July 31. The sizes, with prices after coupon:
  • Twin for $10.49 ($4 off)
  • Full for $11.99 ($4 off)
  • Queen for $14.99 $13.49 ($3 off)
  • King for $17.24 $14.99 ($3 off)