20-30 mmHg compression helps prevent and relieve moderate to severe varicose veins, including during pregnancy, supports post-surgical and post-sclerotherapy treatment to prevent the reappearance of varicose and spider veins, aids in treating moderate to severe edema or lymphatic edema, assists in managing active ulcers and post-thrombotic syndrome (PTS), relieves superficial thrombophlebitis, prevents orthostatic hypotension, and reduces the risk of deep vein thrombosis (DVT), also known as economy class syndrome.