Sarah Collins, 43, grew up in rural, apartheid-era South Africa in the 1970s. Her childhood inspired her to focus on empowering women living below the poverty line through grassroots efforts. The Wonderbag, which was inspired by watching her grandmother cook with cushions, uses heat retention technology to cook food for 8-12 hours without the need for additional fuel. Collins witnessed the benefits African women received from using Wonderbags, reducing the amount of time they spent collecting firewood. For every bag sold, another is donated to a household in Africa, and in the past four years, the Wonderbags have found themselves in 600,000 African homes.