The exclusive Silver Lining Nappy Wrap is designed to be worn under the Happy Nappy™. Silver is a known natural cleaning agent which has been used even in ancient times, as well as having soothing properties that will help calm the soreness caused by nappy rash. The Silver Lining Nappy Wrap is made by sputtering silver ions onto the polyester fabric, which allows the wearer to benefit from these properties. It can be worn under a Happy Nappy™ to form the double layer system required by many swim schools and not only helps to keep nasties at bay but makes cleaning reusable swim nappy easier.