PFAS are commonly used in water proofing clothing. You can read more about them here.Aquadash Swim Parkas were designed to get children home after swim lessons with no fuss. No more dreaded public change rooms. Especially when your child has reached that embarrassingly private age! Or getting dressed as quickly as possible when they are not completely dry and falling over themselves. Or worse still, having to send your child in there alone.A Swim Parka really can make life easier for both you and your child. Buy one today and see the difference it can make in the time it takes you to get home from swimming. 100% Cotton towel lining for warmth Specially treated outer shell to keep car seats dry which is made from recycled materials PFAS Free (you can read more here about PFAS) Heavy two-way YKK zipper allows for maximum mobility and spacious leg room Fitted Hood Extra long length for warmth Two zippered pockets Inside name label ** The OEKO-TEX standard 100-certification ensures that our fabrics have been tested for substances that are harmful to our health and the environment.