HealthSheet Premium Waterproof Hypoallergenic Mattress Protector – 10 Year Warranty

Amazon.com Price: $29.95 (as of 18/10/2017 07:03 PST- Details)

Waterproof: Polyurethane film backing repels liquids like sweat & liquids.
Breathable Barrier Fabric: Guaranteed NOT hot to sleep on. Allows body vapor to breathe through pad.
Dust Mite & Allergy Barrier: Hypoallergenic cotton terry surface provides a healthy sleep zone for your family.