Relieve DiscomfortGreat for varicose veins, swollen ankles, restless legs, sore aching muscles, foot and calf swelling. particularly when travelling. Helps to improve your blood circulation flowing in your ankles and feet.Ergonomic DesignThe right angle L-shaped design combined with ergonomics is a perfect match for your foot, which are snug at the heel. Provides compression 20-30 mmHg with breathability, which is snug at the calf, allowing the socks to be worn for long period of time.Premium MaterialRight & Left foot and seamless toe design provide you with more comfortable and accurate compression.The super stretchiness fabric make it easier to get on & off, improve flexibility. Anti-odor fabric that wicks away moisture. Deodorizes and keeps you dry even with longer use.Widely ApplicationOur crucial compression calf sleeves are beneficial for nurses, doctors, pregnant women, flight attendants, athletes and other workers who stand for a long time, which can well protect their legs and keep their body healthy.4XL Compression Socks This compression socks are ultra wide, size for ankles up to 41cm (16 in), calf up to 66cm (26 in) circumference. Before purchase, please measure the circumference of your ankle and your calf.