SAMAY Waterproof Mattress Cover Premium Hypoallergenic Mattress Protector, Full Size Price: $16.01 (as of 18/10/2017 12:21 PST- Details)

Protects against dust mites, fluids, urine, perspiration, allergens and bacteria (10-year warranty)
Breathable yet repels liquids through a revolutionary waterproof membrane
Ultra-thin with a cotton terry surface , will not change the feel of your mattress