CALIA Mid Rise Ruched Swim Bottoms in Blue - they're a size Medium and are NWOT.

Mid rise swim bottoms
Classic Leg opening
Moderate seat coverage

Work on your tan in the CALIA Women’s Ruched Swim Bottoms. These bottoms feature adjustable ruching as well as a full coverage liner.

Fit:
Cinching at waist offers an adjustable rise
Moderate seat coverage
Classic leg opening hits right at the hip for a flattering fit

Design:
Logo heatseal at wearers center back
Fully lined for comfort and coverage
Adjustable ruching detail at side
Style : WSA20402
Fabric : 78% nylon / 22% lycra