Large Size - The blood pressure monitor cuff measures is 22-48cm/8.7-18.9 inch in circumference and fits almost all sizes, including large arms from skinny to strong, to monitor your family's blood pressure health on a daily basis. Easy to use - Strap the Large Blood Pressure Cuff to your upper arm, link it to your blood pressure monitor and it works. Highly Compatible - Compatible with most models of arm-type electric blood pressure monitors arranged from 0-300 mmHG. Please check the suitability of your blood pressure monitor before purchasing. Perfect Gift - The perfect New Year gift for elders,youth,kids,family, friends, birthday gifts, Christmas gifts, good health. Package Includes - 1 x extra large cuff, blood pressure monitor not included,No need to buy a new monitor, just order this cuff for your old monitor and it will work great and save you money. Specifications: Size:22-48cm/8.7-18.9 inch Color:blue Material:ABS Use Steps: 1.Insert connector to the upper arm blood pressure monitor. 2.Wrap the cuff around your upper left arm, make sure the cuff lies about 2 fingers above the elbow. 3.Be able to fit 2 fingers between your arm and the cuff. 4.Calm down and start to measure your blood pressure.