Purecare Elements Weightless Cotton sheets are made from extremely soft, lightweight, and breathable Micro Cotton�. This airy fabric is made from 100% long-staple cotton fibers that are hand-selected and expertly spun into extremely fine strands for durable, lasting comfort. Designed to provide the ideal fit for both standard and adjustable base mattresses up to 18" deep, our premium sheet sets feature: - Precision-Fit� corners for a clean, crisp fit on the fitted sheet - A 1" Precision-Fit� elastic cuff which prevents your fitted sheet from slipping off your mattress - Enveloping pillowcases that secure your pillow in the case throughout the night - An additional 4" of flat sheet for complete coverage Sheet set includes: fitted sheet / flat sheet / two pillowcases (one pillowcase for Twin and Twin XL) All Purecare Elements sheets feature antimicrobial silver chloride to inhibit bacteria, mold and mildew that cause deterioration, stains, and odors on this product. �- Product Details provided by Manufacturer, Slumberland not responsible for errors in information.