“Super cute, powerfully water-resistant, eco-friendly, wet swimsuit bags.” While these aren’t 100% natural, they are a lot less toxic than a vinyl bag. The owner wrote to me, “The waterproof lining is an eco-friendly polyurethane. It is laminated onto the poly knit fabric using thermo processing rather than using chemical solvents. This breathable and waterproof material is VOC, BPA, and lead free. The exterior lining is made from 100% cotton and is printed with organic inks.”