To find the minimum measures must now make some calculations, namely: Every 2.5 cm added up, add 6 mm arm, calf and neck; 1.8 cm in Power Pump XL the chest; 7 mm at the thigh and 1.5 cm to life. These give the minimum measures calculations; to calculate the maximum, add 2-3 cm in calves, neck and arms, and 5-8 in the chest, leaving the identical measure of life. Here are the formulas with which to indulge them to find the measures. http://healthnbeautyfacts.com/power-pump-xl-reviews/