High-quality lycra fabric, Pads inside. Measurement SMALL(INCH): Bust:32-33 Waist: 24-25 Hips:34.5-35.5 Cups: A65-A80 Height: 155-163 MEDIUM(INCH): Bust :34-35 Waist: 26-27 Hips: 36.5-37.5 Cups: B65-B80 Height: 164-168 LARGE(INCH): Bust: 36-38 Waist: 28-29 Hips: 38.5-39.5 Cups: C65-C80 Height: 169 and Taller Swimsuit has good flexibility, size for reference only. When compare the detail sizes with yours, please allow 1-2 CM differs due to manual measurement. How to measure *Bust: Wear an unpadded bra, Relax arm at sides, pull tape across the fullest part of the bust. Waist: Find the natural waist, which is the smallest part of the waist.Keep tape slightly loose to allow for breathing room. Hips: Find the widest part of the hips. **Please use the hips size to be the key decision-making factor since you can add more pads or push-up pads in case the busts are slightly loose.**