The story
Belle was founded in 2006 by Boulder resident Seth Murray. Prior to the new venture, Murray, a mechanical engineer, worked with industrial designer Mark LeBeau of Logan Utah, to develop and test more than 30 climbing gear products for Trango, a climbing equipment company based in Louisville, Colorado.
LeBeau and Murray named the company after their daughters, named Isabelle and Isabel respectively. They designed the product and then tested a prototype for over a year with other parents.
From Wikipedia’s article on Belle Baby Carriers, shared under CC BY-SA 4.0.4