Microfiber as a fabric, as in JS Sanders 1500 count sheets and Egyptian Comfort 800, 1000 and 1200 thread count sheets, is especially comfortable for people with sensitive skin and for those prone to allergies from dust mites.Because of it's extremely close knit fibers, dust mites cannot collect in microfiber fabrics, thus making it a fabric of choice for bed sheets and other bedding products All Thread Counts have : ? Single Ply Microfiber , so it stays cool during summers and warm during winters, unlike polyester. Microfiber makes the sheets IRON- FREE! ? 4" Hemming for the Flat Sheet & Pillow Cases. ? Elastic on all sides for the Fitted Sheet. ? Upto 18" Deep Pockets to fit Extra Thick Mattresses with Pillow-tops. ? Non-Slippery Fabric that gets softer after every wash. ? Pillow Case s