Ibici Compression Socks Women & Men for Travel, Flight, Medical, Nursing, Hiking, Running & Fitness SKYWALK LINE_Unisex Relaxing and energising unisex support socks, a solution of wellbeing and comfort in cotton, with the addition of yarns with antimicrobial, antistatic, and thermoregulation effects. The real anatomic heel guarantees an optimal elasto-compressive action, and the high, comfortable elastic band guarantees a perfect fit. Skywalk - Relaxing UNISEX support sock with medium-strong compression, in cotton and Q-Skin® yarn, with bacteriostatic effect on the sock. With real anatomic heel, soft and comfortable elastic band. Compression: 16/20 mmHg - hPa 21/27 Composition: 55% polyamide, 33% cotton, 12% elastane Designed to help stimulate blood flow for people who stand or sit for long hours in restricted spaces. Ideal when traveling long distances or for long hours spent working at a desk. mmHg 16/20 – hPa 21/27 The continuous massage effect stimulates blood circulation, and helps to avoid venous stasis, tiredness and aching legs. Premium quality, Stylish european design 55% nylon/12% spandex/33% cotton Made in Italy Machine wash cold  Socks Size Chart Women Shoe Size Men Shoe Size Calf Circumference Ankle Circumference X-Small 6 - 7 4.5 - 5.5 11†- 16†7†- 8†Small 7.5 - 8.5 6 - 7 12†- 17†8†- 9†Medium 9 - 10 7.5 - 8.5 13†- 18†8.5†- 9.5â€Â Large 11 - 12 9 - 10 14†- 19†9†- 10.5†X-Large 13 - 14 11 - 12 15†- 20†9.5†- 11.5†     Small / Medium 6 - 8    Large / X-Large 9 - 11     SIZE CHART & FIT GUIDE 1: To correctly choose the right size you will need your shoe size, ankle and calf circumference. 2: If either calf or ankle measurements indicate a larger size than your shoe size indicates, always choose the larger calf or ankle sizing. 3: If your ankle/calf measurements indicate a smaller size than your shoe size indicates, then we would advise against using this product 4: If there is a tendency for your calf or ankle to swell during the day, all measurements should be taken first thing in the morning.