National Allergy King Size Pillow Protector | Zippered Allergy Pillow Cover, 21 x 37 in, Breathable Cotton, Hypoallergenic, Machine Washable

• Doctor & Allergist Recommended: National Allergy's patented 100% cotton weave features a proprietary 2.6 micron mean pore size, delivering tightly woven, breathable protection trusted by doctors, allergists, and families for decades.
• Secure Zippered Encasement: These pillow protectors with zipper closure encase your pillow on all six sides with a two-part system. The auto-locking zipper stays closed, and a fabric shield under the closure helps minimize any opening at the seam.
• Soft, Quiet & Breathable: The tight cotton weave lets heat escape so you sleep cool, with no crinkle, stiffness, or plastic membrane. A noiseless cover that preserves the natural feel and airflow of your pillow night after night.
• Fits King Size Pillows: White pillow case protectors, 21 x 37 inches, made for King bed pillows. Slip each cover under your everyday pillowcase for a durable protective layer. Also available in Standard and Queen.
• Easy Care, Not Waterproof: National Allergy's pillow protectors are machine washable with the zipper closed. These breathable cotton covers contain no plastic or vinyl membrane and are not designed to block liquids or spills.

• Prepare the Pillow — Ensure your pillow is clean and dry before encasing. Slip the protector over the pillow, aligning the zipper edges.
• Secure the Zipper — Close the auto-locking zipper fully, ensuring the fabric shield is underneath to prevent gaps and allergen entry.
• Cover with Pillowcase — Place your regular pillowcase over the protector for added comfort and style. Wash regularly for hygiene.

Typical situations where National Allergy King Size Pillow Protector | Zippered Allergy Pillow Cover helps — illustrative scenarios, not customer reviews.