Pad Construction Graphic (IMAGE) University of Utah Caption The SHERO Pad, developed by a team of University of Utah materials science and engineering students, is a new feminine hygiene pad that is 100 percent biodegradable and made from all natural materials. It consists of four layers and can break down in as little as 45 days. Credit Ashlea Patterson Usage Restrictions Credit Ashlea Patterson. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.