Activa Men's Ribbed Dress Socks 15-20 mmHg are Compression Socks designed to improve leg circulation. The mild compression range of 15-20 mmHg treats ankle and foot swelling, venous insufficiency, leg fatigue, mild spider veins and varicose veins. The ribbed appearance of the Activa Men's Dress Socks give these socks a fashionable look and provide discreetness. Activa Men's Ribbed Dress Socks are constructed for men using soft micro-fiber construction from a combination of nylon and spandex fabric. Extra padding to the foot and heel are supplied for greater durability and comfort. These Activa Ribbed Dress Socks from Jobst feature a comfortable, turned welt leg band that does not dig into your skin. The addition of a non-binding comfort balloon toe keeps your toes comfortable all day. The ribbed pattern of the Activa Men's Graduated Therapy Microfiber Dress Socks are suitable for both dress and casual wear. Activa 15-20 mmHg Mild Support Ribbed Men's Dress Socks are sold in pairs and are available in Black, Navy, White, Tan and Brown. Sizing for the Activa Men's Ribbed Dress Socks 15-20 mmHg Compression Socks are as follows: Small fits men's shoe size 7 or smaller; Medium fits men's shoe size 7 1/2 - 10; Large fits men's shoe size 10 1/2 - 12; X-Large fits men's shoe size 12 1/2 or larger. Activa Men's Ribbed Dress Compression Socks are latex free.