Thank you for showing your interest in Smart Knit Seamless Diabetic Crew Sock, Blk, Med from Diabetic Shoe Accessories. The Smart Knit Seamless Diabetic Crew Sock, Blk, Med is a product of Therafirm and is thereby made of the highest quality. If you have any questions regarding Smart Knit Seamless Diabetic Crew Sock, Blk, Med or any product in Diabetic Shoe Accessories, please contact us. Our experienced personnel will answer any questions you have about Smart Knit Seamless Diabetic Crew Sock, Blk, Med. Also, if you are interested in purchasing large quantities of Smart Knit Seamless Diabetic Crew Sock, Blk, Med or any Diabetic Shoe Accessories, please contact Customer Service.