Marion Donovan was an inventor and entrepreneur. Her most famous invention was the first waterproof diaper cover. When Donovan became a mother, she would always get annoyed with leaking diapers because it would mean laundering all the bedding. So she decided to improve the diaper covers that weren’t that effective and made a new product of nylon parachute cloth, which also had the improvement of not causing a rash. She was the one who replaced safety pins with snaps to avoid pokes. She received her patent in 1951 and sold the rights that same year to Keko Corporation for $1 million. She also came up with the idea of a disposable diaper, but she needed to find a kind of paper that would be absorbent and would be gentle on sensitive baby skin. However, no paper manufacturer was interested, as to them, her invention didn’t seem necessary.