These leg warmers are made with a material that is warm and soft to the touch. Moderate-strength elastic yarn is used at the top and bottom openings to prevent slipping and provide a comfortable fit. They easily keep your legs warm and are suitable for trekking and other activities in cold weather. ◎Specifications 【Material】76% Acrylic + 15% Nylon + 5% Wool + 3% Polyester + 1% Polyurethane 【Average Weight】80g 【Size】Free Size (Calf circumference 28-40cm) Found these in the back of a closet. I no longer wear shorts, so I hope someone who needs them will wear them. Thank you for looking.