Amazon.com: 4 Pack Deluxe Zippered Vinyl Pillow Covers - Waterproof Protectors for Longer Lasting Pillows. Standard Size 21"x27". Ideal for Home, Hotel and Hospital use. : Home & Kitchen
Six Gauge Waterproof Vinyl Zippered Pillow Covers, Queen 21X31, 6 Pair Per Case, Price Per Pair | HotelSupplyDepot.com