Reusable swim diaper with antibacterial, germ and bacteria barrier. Outer shell: 85% nylon, 15% spandex. Antibacterial liner: 100% polyester laminated with breathable antibacterial film. Designed to contain and trap potentially dangerous bacteria such as e-coli from spreading in the water and areas around the water. Designed to fit comfortably and discreetly under a swimsuit, replacing traditional absorbent diapers. The perfect diaper cover when wearing an absorbent diaper is preferred or necessary. Breathable - no trapped air pockets, reduces the risk of infections and rashes caused by heat and moisture. No sagging and no dripping. Approved by public health and swimming facilities since 1992. latex free. Machine washable. Hang dry. made in the USA.