Brandeis University SparkTank competition winner Mariam Serag had a classic problem - standing all day in high heels is painful and tiring. Being an entrepreneur, she had her own solution to a common problem: start a footwear company A line of convertible heels that combine comfort with style, Tambu is proud of their sustainable sourcing, as well. We learned from Mariam about her entrepreneurial journey, as well as her advice for other innovators. www.tambufootwear.com/