You should always make sure you use the cuff size most appropriate for your arm when using a blood pressure monitor. Cuff fits arm circumference 22-44 cm. 1 x 22-44cm Extra Large Cuff(NO CUFF CONNECTOR).
Large 22-44cm Upper Arm Cuff for Digital Blood Pressure Monitor or 6 Connectors
Extra Large Cuff Arm Circumference 22-52cm for Digital Blood Pressure Monitor
Large Cuff Arm Circumference Size 22-32cm for Digital Blood Pressure Monitor
XL Cuff 22-52cm Upper Arm Cuff Replacement for Digital Blood Pressure Monitor UK
Extra Large Blood Pressure Cuff Large Arms Bigger Upper Arms 9-20.5 Inches Blood Pressure Monitors Large Cuff for Automatic Blood Pressure Monitor Digital Machine, with 4 Pcs Extra Joints
yuwell Blood Pressure Monitor, Extra Large Upper Arm Cuff, Digital Blood Pressure Machines for Home Use, 3.8" Large Display, Dual Power Options with USB Cable (YE660D)