Measure around the biggest part of your chest while keeping the measuring tape horizontal
Measure around the narrowest part (typically the small of your back and where your body bends side to side) while keeping the measuring tape horizontal.
Measure your inner leg from the top of your thigh down to your ankle (where the cuff of your pants hangs).
Measure the circumference of your hand around your knuckles starting at your thumb.
Chart according to shoe size. To measure your foot, start at the heel and measure to the tip of your longest toe.