Flight Socks Size: Small / Medium for Womens Shoe Size 6 - 9.5 / Mens Shoe Size 5 - 9.5 Large / X-Large for Womens Shoe Size 10 - 13.5 / Mens Shoe Size 10 - 12.5 Helps To: - Reduce Swelling - Boost Circulation - Control Odors - Soothe and Massage Achy Legs and Feet - Relieve Symptoms Of Varicose Veins Perfect for being on your feet, sitting all day, or travelling. Supplied in Happy Star® branded packages Happy Star® is a UK registered trade mark (Trade Mark Number: UK00003195609)