Therapeutic compression socks. Graduated compression at 3 points, with concentration at the ankle. 15-20 mmHg compression at the ankle helps provide relief for moderate swelling of the foot and leg. Works well for those that sit all day, stand all day, or walk all day. Great travel sock, too. Easy to get on and take off nylon/spandex blend. One size fits women's shoe size 5-11 and fits calf up to 15".