Made Of Extra Durable, Wear Resistant Nylon, As Well As A quality, Comfortable Velcro Strip That Allows For Easy Measuring In Any Body Type, Manual Blood Pressure Cuff Ensures Effortless And Professional Blood Pressure Reading At Home. Get Reliable Results, Every Time Equipped With A Reliable, Metal Air Needle Valve With A Smooth Pressure Relief Regulation And A Large, Easily Readable Number Dial, Suitable For Seniors Or People With Low Vision, This Device Has Been Clinically Tested And Calibrated To Deliver Accurate, Reliable Readings, Every Time