Experience the extraordinary comfort of Tibetan yak wool, one of nature&';s most remarkable fibers. Our 2-pack yak socks feature a streamlined fit that&';s perfect for dress shoes, slim boots, or anyone who prefers a sleeker sock without bulk. Streamlined Design: Sleek profile fits comfortably in any footwear Wide ribbed cuff stays up without binding Premium 53% yak / 44% wool / 3% nylon blend Two pairs for ultimate versatility Sizing: Small/Medium fits women&';s 6-9, men&';s 5-8 Medium/Large fits women&';s 10-12, men&';s 9-13 The United By Blue Difference: Every purchase removes two pounds of trash from oceans and waterways so you can feel good while your feet feel great.