Medium compression helps soothe and energize tired, achy legs, plus speed up recovery after long days on your feet. Graduated compression (15-20mmHg) is stronger in the ankle, easier in the calf to hug legs without squeezing the life out of them. With foot-hugging Honeycomb Arch Support, no annoying toe seam, and ultra soft yarns, this is a Bombas sock, through and through. As always, one purchased = one donated.