measure around the base of the neck where the collar sits.
measure the chest at the fullest part, placing the tape close up under the arms.
measure the natural waistline.
(4) Inside Leg:
measure from the crotch to where your trouser is normally worn on the shoe.
(5) Body Length
To determine jacket length requirements, measure from the centre back of your neck line to the natural hemline. Check size guide to establish if a Short, Medium, Long or Extra Long length is required. Jacket lengths vary depending on the style or the fit of the garment.
(6) Total overarm
Stand with your arm raised and bent 90 degrees at the elbow 1. Start with the tape at the nape of your neck, measure across to your shoulder 2. Continue from your shoulder down to your elbow 3. And finally from your elbow to the bone in your wrist.