Features: Material: Our rulers are made of high-quality ABS, PVC and glass-fiber materials with wear resistance and long service life. Double sided scale: this three-dimensional scale is accompanied by a reminder of the health-range of men39;s and women39;s waist circumference. Double sided scale for easy reading. Can gauge BMI-body mass-index: this three circumference ruler can gauge BMI- body mass-index. Convenient and fast. Automatic clamping position: this three circumference ruler can be rolled up automatically with one-click. Convenient and fast without hurting hands. Measuring buckle design: the buckle is placed on the three circumference ruler, which is convenient for measurement and flexible to use. Specifications: Material: ABS Size:6.00 * 5.30 * 2.00cm Function: Body Ruler Package List: 1 * Ruler