Travelsox Flight OTC Patented Graduated Compression Travel Socks TS1000 FITTING GUIDE- (SMALL W 5-8 M 5-7) (MEDIUM W 8.5-11 M 7.5-10) (LARGE W 11+ M 10.5-13) (XL M 13.5+) Travelsox Fibers Stretch more than regular socks, for tighter fit select next size down COOLMAX FIBER- Ideal Compression (10-18 mm Hg) Machine Wash Inside out ORIGINAL TRAVEL SOCKS- Designed in Italy using a patented design that helps stimulate blood flow, reducing swelling, and can prevent DVT COMPRESSION- Real Graduated Compression starting mid foot for arch/plantar support and prevent pooling of blood, Two hand adjust to sit right below the knee TECHNOLOGY- Helps Tired Aching Legs, Prevents Edema, Spider Vein and Varicose Vein Support, reduces swelling, blisters, and Cramps, 100% Made in Italy