Pro Series Exercise Ball Slow Deflate Red 55 cm Walker Wheels Knee High (Closed Toe) * 16 7136 Knee High (Closed Toe) * 15 20 mmHg * Classic Black * X Large * Ankle Circumference 11 1 2 13 * Calf Circumference 13 3 8 19 5 8 * Stylish leg therapy that is easy to don for soft and comfortable year round wear * Made with a combination of silicone blend finish multifiber yarn and 3D knit structure * Cool and breathable which makes it comfortable to wear any time of the year * Guaranteed compression 15 20 mmHg 20 30 mmHg 40 mmHg for optimum medical efficacy using multifiber yarns for the softest feel * The reciiprocated and reinforced heel allows for greater durability and lasting comfort * Jobst© Opaque© conceals blemishes varicose veins and scars * Thigh high Waist high and Knee high styles * Now available in luxuriously smooth non ribbed style * Latex free Wheels are set back on frame to prevent tipping Excellent Retail Packaging * This ball was specially designed to deflate slowly if punctured thereby reducing risk of injury * Provides improved stability at the points of body contact and enhanced performance due to the responsive surface design * Comfortable to sit on * Great grip thanks to built in latitudinal ridges and an outstanding texture that doesn t feel like plastic * Comes with two plugs an inflation adapter a measuring tape to help insure proper inflation and a poster detailing 24 exercises