Are you looking for a knee high slippers socks that can relieve foot stiffness, sore muscles and joints, achilles tendonitis, plantar fasciitis？ SOFT MATERIAL SLIPER SOCKS - Our winter knee high slipper socks are made of 50% Polyester, 40% Nylon, 10% Spandex. Super thick fleece interior for maximum warmth and comfort, these breathable slipper socks keep the warmth enclosed in the sock to keep you cozy, just like fluffy hugs for your legs. An opening in the foot part of the socks When you are moving at home, the soles of your feet can be exposed and you can wear slippers. When you feel hot, you can put your toes out without feeling stuffy. It is practical and convenient for home use, effectively keep out the cold while sleeping. It can also be used as wrist warmers when you have to work in cold weather. Machine wash available. GIFT IDEA: Ideal for someone with painful knees, chronic pain and cold extremities. Would be a special great gift for friends, family, your parents, wife in Christmas and new year! Note: 1. The bottom of the product is easy to slip. When walking indoors, you must expose your feet from the opening before using it. 2. Please do not use this product when pregnant women go up and down stairs or move around with goods. 3. Please do not forcefully pull out the fluff on the surface of the product. 4. Please do not use it near fire and high temperature.