US: 3XL (54–56) to United Kingdom Size 42–44

US: 3XL (54–56): Corresponds to a chest width of 137.2–142.2 $\text{cm}$ (54–56 $\text{in}$), neck collar girth of 49.5 $\text{cm}$ (19.5 $\text{in}$), sleeve length of 96.5 $\text{cm}$ (38 $\text{in}$), and fit style Big & Tall Fit.

United Kingdom Size 42–44: Corresponds to a chest width of 106.7–111.8 $\text{cm}$ (42–44 $\text{in}$), neck collar girth of 41.9 $\text{cm}$ (16.5 $\text{in}$), sleeve length of 88.9 $\text{cm}$ (35 $\text{in}$), and fit style Comfort Fit.