Sigvaris CompreFlex Standard Calf (20-50 mmHg) Brand new In box Quantity 1 per box Sigvaris CompreFlex Standard Calf The Compreflex Standard calf is an inelastic compression device offering 20-50mmHg compression from the ankle to below the knee. The wrap features a contoured calf providing a superior fit while the front stretch panel allows for easy application. Includes a pair of non compressive liners. Accutabs allows for accurate measurement of what compression in needed.