35° Sport™ Knee warmers keep you warm, toasty and limber. Slip on these soft, comfy knee warmers to relieve stiff, aching joints. They keep heat in, chills out. 100% acrylic material stretches to fit comfortably from thigh to calf. Can be worn under dresses or pants. Ideal for exercise or on cold winter days. A godsend to those with arthritis or sports injuries! Machine washable. One pair; one size fits all. Imported.