Length refers to the full length from the shoulder to the crotch; Bust width, Waist width, and Hip width are single-side measurements when the swimsuit is laid flat. To get the full circumference, multiply the bust width and waist width by 2; Leg opening width is the flat measurement of one leg opening. All above measurements are garment flat measurements.

When measuring, customers are advised to first measure their bust, waist, and hip circumferences: for bust, measure around the fullest part of the chest; for waist, measure around the natural waistline; for hip, measure around the fullest part of the hips. Then, compare these to the bust width, waist width, and hip width in the table to choose the size. Since this style is a fitted athletic swimsuit, it is recommended to prioritize hip and bust measurements, with length as a secondary consideration, to avoid the lower body being too tight or the upper body pulling.

If you are between two sizes: if you want a tighter fit for swimming to reduce drag, choose the smaller size; if you have a longer torso, broader shoulders, or prefer more freedom of movement, it is recommended to choose the larger size for overall comfort. For long-sleeved styles, it's also advisable to consider the arm and shoulder range of motion, as the feel when trying it on is more important than with typical strap swimsuits.