Premium Hypoallergenic Waterproof BED BUG Mattress Cover - TWIN Cotton 100% waterproof Protects against BED BUGS allergens, dust mites, bacteria, perspiration, urine and fluids 12" inch deep Zippered fitted sheet style design Airflow Technology allows air to circulate through the protector, but repels liquids Hypoallergenic cotton terry surface is noiseless, will not change the feel of your mattress and naturally absorbs moisture Great for asthma, eczema and allergy sufferers