Descriptions: 1. Measure your body fat through skin-fold measurement. 2. Refer to the body fat interpretation chart to determine your body fat percentage and what it means. 3. Length: approx.6.5cm/2.6\". Weight: approx.20g. 4. Measure the fat percentage for tummy, waist, , buttocks or legs, etc. Features: 1. Includes body fat tool, body fat measurement charts, instructions for body fat measurement and body fat tracking chart 2. Accurate, reliable, private, and easy to use 3. Inexpensive, convenient, and durable 4. Endorsed by the World Natural Bodybuilding Federation Package include: 1pc x Fat Tester Caliper 1pc x User Manual