A prefold diaper is a type of cloth diaper made from multiple layers of fabric, typically cotton, that are sewn together. They are designed to be folded and secured around a baby, providing absorbency and comfort. Prefolds come in various sizes to accommodate different ages and weights of infants. These diapers are often used with a diaper cover to prevent leaks and can be fastened with diaper pins or snaps. Prefold diapers are popular among parents looking for an eco-friendly and cost-effective alternative to disposable diapers, as they can be washed and reused multiple times.