Waist: Measure firmly around natural waist at navel height.
Chest: Measure around the chest at under-arm height, while wearing a shirt or t-shirt, ( if you plan to wear a waistcoat under a jacket then measure while wearing a waistcoat ) with your arms by your side.
Back Length: Measure from the nape /collar of the neck to the seat / base of the spine. We use this, the sleeve length and your height to work out a proportional back length for the jacket. If you have an exact measurement for the full back length (ie if you've taken it from a well fitting jacket, from the collar seam to bottom) please let us know in the additional instructions box
Sleeve Length: Measure from the shoulder seam ( crown ) to cuff. The standard length will show about an inch of shirt cuff.