From Amazon, Natra Cure socks! They have gel inserts to cover the top and bottom of your feet, they even stay on as you fall asleep, I would recommend two pairs so you always have one in the freezer ready for use. I have the smaller blue ones and wear a size 8 shoe, female. Just fit, Could be an inch longer. Definitely provide relief while you’re at home, I’ll take them with me when I travel, sometimes I even lay them on my burning calf or thigh.