Sigvaris 500 Natural Rubber: The original gold standard in compression hosiery. Rubber has a very low "fatigue" rate so compression is sustained throughout the day. These stockings are ideal for patients with more serious indications or who need long-term compression therapy. We offer this product up to 40-50mmHg compression online, and can special order the 50-60mmHg compression for those with a prescription. The fabric composition is 30% natural rubber, double coated with nylon to provide the greatest degree of comfort and durability. Available in with an open toe only, in all styles including a thigh-high with waist attachment.