Although this monitor seems to have gotten good ratings from other users overall, the ComFit cuff was very rigid and did not fit my arm at all and kept slipping down to my elbow. This of course lead to error readings consistently. If your arms are bigger on top this cuff probably will not work for you. I instead went with another brand monitor that has a "Soft Cuff". Please do your research to determine if a "rigid" or "soft" cuff with work best for you. I will be returning this monitor because of the rigid cuff.