SPECIFICATIONS SIZE L, Produl description : Upper Arm Blood Pressure Monitor Cuff Product name : Wide Range Soft Cuff Model : HEM-RamL31 Type B Arm Circumference : 22 ~ 42cm Packade Contents : Wide Range Soft Cuff, Instruction Manual, 3 air plugs. * SPECIFICATIONS SIZE M, Produl description : Upper Arm Blood Pressure Monitor Cuff Product name : Medium Cuff Model : HEM-CR24 Type B Arm Circumference : 22 ~ 32cm Packade Contents : Medium Cuff, Instruction Manual, 3 air plugs. *SPECIFICATIONS SIZE S Produl description : Upper Arm Blood Pressure Monitor Cuff Product name : Small Cuff Model : HEM-CS24 Type B Arm Circumference : 17 ~ 22cm Packade Contents : Small Cuff, Instruction Manual, 3 air plugs