30-40 mmHg – Extra Firm Compression. This strong Surgical Weight will provide a firm fit and graduated 30-40 mmHg compression. • Compression Level: 30-40 mmHg. No matter how healthy you are, when you are passively seated in a plane, a car, or even at a desk, for long periods of inactivity during which the leg muscles are not moved can lead to blood pooling in the legs.
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