To determine the perfect size, see the sizing guide below when measuring your body.BUST
With a bra on and no clothes on. Measure around the largest part of the chest and under the arms. Keep the band straight across your back and level with the floor.
While you are in a relaxed position, measure around your natural waist – the narrowest part of your waist.
Stand with legs and feet together and measure the fullest part of the buttocks, approximately 10 cm below the waist.
Size Guide - Boob tape
Our recommendations for choosing the size of the chest strap: