Centre back length at size 40R = 75cm
Back Length: From the bottom of the collar to the hem of the garment.
Sleeve Length
(crown to cuff): From the top of the sleeve to the end of the cuff, with a straight arm.
Shirt Chest Size: Measure around fullest part of your chest. Keeping the tape just under your arms, extend around your shoulder blades, holding tape level.
Sadly it didn't fit so had to return. Quality was very nice though.
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Navy Herringbone
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Navy Birdseye