Angelina Kid's Sherpa-Lined Thermal Christmas Socks with Gift Tags 95% Acrylic, 5%Spandex Sherpa-lined for maximum warmth and comfort Silicone gripper dots on the sole One size fits up to US women shoes size 6.5 Also available in Womens (ASIN: B00OBYRHO8) and Mens (ASIN: B075RLSNFR) sizes Machine wash gentle cycle in laundry bag, line dry. For best results, hand wash.