The AllerZip® Smooth Pillow Protector gives you complete pillow protection for a healthier sleep environment. Our patented BugLock® and AllerZip® seal gives you protection against dust mites and allergens. Why is the product Certified asthma & allergy friendly®? This product is Certified asthma & allergy friendly® because we have scientifically tested it to ensure that it: • Has an outer fabric that acts as an effective barrier to the passage of allergens; • Has a "breathable" outer fabric to ensure your comfort; • Can be easily cleaned to remove allergen accumulation; • Can withstand the wear and tear of the recommended cleaning techniques; • Contains no chemicals above certification levels that are known to trigger asthma and allergy symptoms or irritant responses; and •Must be resistant to water penetration. What are the product's features? The AllerZip® Smooth Pillow Protectors can also be used on all visco elastic, latex, and synthetic pillows. Protection • Certified asthma & allergy friendly® • Protects against allergens, bacteria, human skin cells, dust, and pet dander • Dust mite barrier • Protects against stains such as spills, sweat, bodily fluids Comfort • Ultra-thin material does not detract from the comfort of the pillow • Waterproof and breathable Miracle Membrane® • Super soft and absorbent Safety & Durability • Machine wash and tumble dry • Safe for use with electric blanket