PureCare Elements 100% Tencel(TM) Lyocell pillowcases are silky smooth and cool to the touch. Designed to provide the ideal fit, our pillowcases feature an enveloping pocket that secures your pillow in the case throughout the night. All PureCare Elements pillowcases feature antimicrobial silver chloride to inhibit bacteria, mold, and mildew that cause deterioration, stains, and odors on this product.