US: 3XL / XXXL to Europe Size 48-54

US: 3XL / XXXL: Corresponds to a waist range of 180–230 $\text{cm}$ (71–90.5 $\text{in}$), hip range of 180–220 $\text{cm}$ (71–86.5 $\text{in}$), and fluid absorbency capacity of 3500 $\text{ml}$ (118.5 $\text{oz}$).

Europe Size 48-54: Corresponds to a waist range of 80–120 $\text{cm}$ (31.5–47 $\text{in}$), hip range of 95–125 $\text{cm}$ (37.5–49 $\text{in}$), and fluid absorbency capacity of 1400 $\text{ml}$ (47 $\text{oz}$).