World's Softest Women's Novelty Classic Collection Crew Socks (Medium (Womens Shoe (5.5-9.5), Black Fair Isle) 80% Ultra-soft acrylic/17% Nylon/ 2% Polyester/1% Lycra Spandex Classic Crew Length Reinforced Heel and Toe Full Cushioned Bottom and Smooth Toe Seam Made in the USA Assorted Colors, Size Medium