Women of Africa: Solar backpack entrepreneur brightens pupils' lives
Eco-friendly entrepreneur Thato Kgatlhanye is the founder of Rethaka Repurpose Schoolbags, which designs and manufactures school bags from recycled plastic bags in South Africa.
The bags also have a built-in solar light that charges during the day and can be used by school children living in homes without electricity to study after dark.
Ms Kgatlhanye won $50,000 (£34,000) in prize money to start off her business. This initial investment went into machinery and staff salaries.
The company now employs 20 people and there are plans to expand production to include new lines.
Women of Africa is a BBC season recognising inspiring women across the continent. The second series, Africa's New Businesswomen, introduces eight female entrepreneurs who are finding success in their country - and beyond.