Made from micro-denier acrylic yarns whose properties out wick cotton by over 75%. Our "Stretch to Fit"™ and Easy Fit™ cuffs ensure that your socks fit your feet perfect each time you use them. No shrinkage, piling or fading will occur. Our Stretch to Fit™ sizing ensures a proper fit to all but eliminate blisters and hot spots as well as socks that never fall down! Hypo-Allergenic and color fast.