Size Medium UK 12-14 Fit Summary: Fits slightly larger, Boxy fit. If you want a fitted look, it is recommended to size down. Centre back measurement for Size M is 73cm and sleeve length from shoulder point is 57cm. Functional yet stylish, the Women's Explorer Jacket is perfect for strolling a city street and can withstand heavy wind and rain. Fully waterproof with a taped seam construction and full mesh body lining for breathability, the Explorer is modern take on a traditional utility style. Model is 178cm and is wearing a size S.