Men's Firm Support Socks 20 30mmHg Navy Large 20 30 Below Knee 3D contoured knit for effective Oral Supplement Encala Unflavored 3D contoured knit for effective compression The Baum Pocket Aneroid is a 300 mmHg portable instrument * It's built to agree with our master instruments which are traceable to the United States National Institute of Standards and Technology * It complies with ANSI AAMI SP 9 for accuracy and performance (1% full scale + 3 mmHg) * The unique high contrast scale and red pointer increase visibility and reduce parallax error * They are manufactured with a precision low friction movement and twin pre seasoned phosphor bronze diaphragm capsules * Blue Jay Brand * Closed Toe* Graduated compression aids blood circulation * Clinically proven and physician recommended to relieve tired aching and swollen legs often symptoms of varicose veins * Fiber content: Nylon (85%) Spandex (15%) * Fashion rib knit * Reciprocated heel * Balloon toe * Soft comfortable welt without restriction * Superior stay up performance * HCPC CODE: N A