503N Natural Rubber 30-40mmHg U Medium Full Long M4 Beige for Men & Women Thigh with Grip-Top Open Toe

Why Choose Sigvaris 503N Natural Rubber Thigh High 30–40 mmHg M4 Beige

Natural rubber compression garments perform differently from synthetic fibre constructions at the same compression class. Rubber-based yarns maintain compression more consistently across the wear period — they resist the elastic fatigue that causes standard synthetic stockings to lose measured compression by the end of the day, particularly at the demanding 30–40 mmHg extra-firm level where therapeutic consistency matters most clinically. The 503N is appropriate for presentations requiring strong containment: chronic venous insufficiency, significant oedema, venous stasis, varicose vein management, and early-stage lymphoedema maintenance where sustained pressure throughout a full day of activity is the therapeutic requirement. M4 Full Long sizing accommodates medium circumference with longer thigh length — a sizing combination underserved by shorter thigh-high formats that bunch or generate incorrect gradient delivery on taller-limbed users. Grip-top band maintains thigh positioning without rolling, the open-toe design relieves forefoot pressure and allows visual skin inspection important at this compression level, and Beige provides neutral coverage. Unisex construction — SKU 503NM4O77.

Key Features

✔ 30–40 mmHg graduated compression (extra-firm, prescription-level)

✔ Natural rubber construction for sustained compression with minimal fibre fatigue

✔ Thigh-high length for full lower-leg and thigh coverage

✔ Grip-top band to maintain position without rolling

✔ Open-toe design for forefoot comfort and skin inspection access

✔ M4 sizing — Medium Full Long for medium circumference and longer thigh length

✔ Beige — unisex fit for men and women

✔ SKU 503NM4O77

Benefits

✔ Consistent compression throughout the day — natural rubber resists elastic fatigue

✔ Extra-firm support for chronic oedema, venous stasis, and advanced venous conditions

✔ Full Long sizing maintains correct gradient on longer-limbed users

✔ Open toe reduces forefoot pressure and supports skin monitoring at this compression level

✔ Grip-top holds stocking in position without waist attachment

Clinical & Typical Applications

✔ Chronic venous insufficiency (CVI) and venous stasis requiring consistent extra-firm compression

✔ Significant oedema and early-stage lymphoedema maintenance

✔ Varicose vein management at extra-firm prescription level

✔ Longer-limbed users requiring Full Long thigh-high sizing

✔ Clinical presentations where daily sustained compression consistency is the therapeutic priority

Usage & Care

Don stockings in the morning before rising — 30–40 mmHg natural rubber requires application when oedema is at its minimum. Use a donning glove; application of natural rubber at this compression level requires controlled technique. Smooth evenly from ankle to grip-top with no bunching. Machine wash on gentle cycle in cool water with mild, non-bleaching detergent; hang or lay flat to dry. Do not tumble dry, bleach, or iron — natural rubber requires gentle care to preserve elastic properties. Replace every 4–6 months or when compression consistency diminishes. 30–40 mmHg requires prescription and clinical fitting — confirm M4 Full Long sizing with accurate measurements before dispensing.