Item Type: BMI Tape Material: Plastic case, PVC tape, metal pull ring Scope of Application: BMI tape measure, waist measurement, fitness, weight loss Designed with scale, with the unit of cm, one side for men use and the other side for women use Tape Length: Approx. 150cm / 59.1in Applicable Parts: Arms, chest, waist, calf, thigh, buttocks and so on Usage: 1. Press the button in the middle to retract the tape measure If you're on a diet, help measure your body shape and check your progress Just pull the tape measure and the results will be locked in place 2. Button retract and lock function to ensure comfortable measurement BMI (called Body Mass Index) is calculated by dividing weight in kilograms divided by height in meters squared.It is mainly used for statistics. When it is necessary to compare and analyze the healthy effects of a person's weight on people of different heights, BMI is a neutral and reliable index, which is commonly used in the world to measure the degree of fatness and healthy of a person. BMI is calculated from your height and weight. BMI is a classification method for assessing the degree of obesity recognized in the world. The World Health Organization (WHO) also uses BMI to define obesity or overweight. BMI is a measure closely related to total body fat, which takes into account both weight and height.BMI is simple, practical, and can reflect the overall overweight and obesity.The tests were more accurate in identifying healthy risks associated with being overweight than weight alone. Package List 1 x BMI Tape 1Does not contain any chemical composition, nontoxic and tasteless, high temperature resistance, corrosion resistance, acid and alkali resistance. 2Can be used to measure BMI, body mass index, chest circumference, waist circumference, abdominal circumference, a wide range of measurement. 3Apply to arms, chest, waist, calves, thighs, buttocks, etc. Meeting your different measuring demands. 4BMI is a neutral and reliable index, which is commonly used in the world to measure the degree of obesity and healthy of a human body. 5Measuring tape designed with accurate scale, with the unit of cm, one side for men use and the other side for women use.