★This is a great value set of 3 "Mediven Flight Socks 140 Black XL Size"★ We also have single socks available. These are "Mediven Flight Socks 140" from SOLIDEA, a compression wear brand born in Italy, a leader in preventative medicine. - Brand: SOLIDEA - Made in: Italy - Size: XL - Color: Black - Denier: 140 (From the description on the package) Graduated compression knee-high socks. They provide support by gradually decreasing pressure from the ankle to the knee, making your legs look slimmer. Comfortable cotton-blend material. Cushioned soles to stimulate the feet. Perfect for those who sit or stand for long periods, as well as for travel and long flights. Sanitized antibacterial and odor-resistant treatment. *Please purchase only if you understand that these are stored at home.