Jobst For Men 20 30 Knee Hi Black Large (pair) Sharps A Gator Disposal System Saturation Sound Pressure Level (SSPL) Wrist and Hand Saturation Sound Pressure Level (SSPL) 113dB Frequency Range 200 5000Hz Total Harmonic Wave Distortion ≤3% Reference Test Gain 27±5dB Input noise ≤32dB Sound amplification 29±5dB Max Quickest response among all bedwetting alarms available * Comes with 2 long lasting reusable moisture sensing pads Shipping Carton Size: 12 L x 10 W x 6 H Knee High (Closed Toe) * Classic Black * 20 30 mmHg * Large * Ankle Circumerence 9 1 2 10 1 2 * Calf Circumference 14 18 1 2 * * Attractive ribbed design with 3 D knit structure * Easy to wear with a comfortable band that keeps socks up without binding * Flat toes seams and a roomy toe section * Reinforced heels for a longer lasting durable product * Anti bacterial additive reduces unpleasant sock odor * Special Moisture Transport System with soft micro and multi fiber yarns in the sole keeps feet dryer * Latex Free * Color: classic black