US: 54-56 to United Kingdom Size 46-48

US: 54-56: Corresponds to a relaxed chest range of 130–134 $\text{cm}$ (51.2–52.8 $\text{in}$), elastic waist range of 116–122 $\text{cm}$ (45.7–48 $\text{in}$), and fit classification Loose Lounge Fit.

United Kingdom Size 46-48: Corresponds to a relaxed chest range of 114–118 $\text{cm}$ (44.9–46.5 $\text{in}$), elastic waist range of 100–106 $\text{cm}$ (39.4–41.7 $\text{in}$), and fit classification Loose Lounge Fit.