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Omron CD-CS9 Small D-Ring Cuff$23.45
Durable D-ring contoured cuff fits arms 7′′ to 9′′ in circumference. Before you purchase a home blood pressure monitor, it's important to determine the best cuff size for you. To determine your arm size, use a cloth measuring tape and measure the circumference of your left upper arm midway between your elbow and shoulder.