15-20 mmHg compression helps prevent and relieve minor to moderate varicose and spider veins, alleviates tired, aching legs and minor swelling of feet, ankles, and legs, aids in preventing varicose and spider veins during pregnancy, reduces the risk of deep vein thrombosis (DVT), supports post-sclerotherapy treatment to prevent the reappearance of varicose and spider veins, and provides an ideal compression level for long-distance travel.