These circulation-enhancing socks earned The Best rating from the Hammacher Schlemmer Institute because they provided optimal graduated compression and comfort. The Best socks had a compression difference that was 16% tighter around the ankle than the calf—far superior to other socks with only a 6% compression difference. The 15-20 mmHg compression they provide has been demonstrated to improve blood circulation, reduce lactic acid build up, and aid in muscle recovery. They were also rated as the most comfortable by a group of panelists, describing them as “incredibly smooth and soft”, “the most comfortable I have used”, and “snug enough to feel the compression, but loose enough for comfort and flexibility.” The Best socks also wicked moisture 30% better than lesser models. Machine washable. White or Black. Sizes S (Men’s 5-7; Women’s 6-8), M (Men’s 7 1/2-9 1/2; Women’s 8-9 1/2), L (Men’s 10-12; Women’s 9-11), XL (Men’s 12-14; Women’s 11 1/2-13).