These Booties Are Lined With A Luxurious, Genuine Shearling That Wicks Excess Moisture While Allowing The Skin To Breathe. It Keeps Feet Warm In The Winter And Cool In The Summer Outside Is Sheepskin Suede Which Repels Dust Mites and Mildew, Making It A Excellent Choice For Allergy Sufferers! Brand New And Never Worn Comes From Pet & Smoke Free Home