From the #1 selling allergy bedding brand AllerEase, the Ultimate Cotton Zippered Pillow Protector delivers premium comfort and protection for a truly clean bed. It features soft 100% cotton fabric with temperature-balancing properties to wick moisture when you’re hot and insulate when you’re cold. Our expertly designed Allergy Defense Fabric® even prevents unhealthy household allergens -- like dust mites, pollen, and pet dander -- from collecting in your pillow. Antimicrobial product protection keeps your protector fresh by inhibiting the growth of odor-causing bacteria, and it can be washed in hot water to remove dirt, bacteria, and surface allergens. Ultimate Cotton will keep your pillow protected for a healthy night's sleep and is backed by the AllerEase Lifetime Warranty.