The length of tops vary according to style. On average a size M measures 29.5 inches / 75cm down the centre back from neck to hem. Please see 'info & care' on individual product pages for items specific length measurements. HOW TO MEASURE To choose the correct size for you, measure your body as follows: 1. CHEST Measure around the fullest part, place the tape close under the arms and make sure the tape is flat across the back