Martex Ultra Touch Suites Sheets Are Our Heavier, More Substantial Brushed Microfiber Sheets. A Unique Twill Weave Constructed From Durable 100% Polyester Microfiber Yarns, The Fabric Is Lightly Brushed, Providing Exemplary Softness And Breathability. Microfiber Is Known For Its Durability, Softness, Smoothness, And Quick-Drying Properties That Speed Up The Laundering Process. This Heavier GSM Has A Luxurious Hand Feel And Is Ideal For Colder Climates. For Enhanced Durability, The Fitted And Flat Sheets Have Lockstitch Hems. Side Elastics Extend Into The Corners Of The Fitted Sheet To Prevent It From Shifting.