Woobi Play is an anti-pollution mask for children that filters at least 95% of dangerous airborne particulate matter (PM). The mask is designed to meet children at eye- level, with a playful, educational approach, and is a bold shot at designing a simple, new typology, that transforms a professional mask to fit into a child’s universe. The high-performance filter is positioned on the side of the mask, allowing the translucent, medical-grade silicone to reveal the face, rather than hiding it as many other masks on the market do. This improves social interaction between the kids who use the product and their caregivers, and Woobi achieves high performance while remaining sensitive to social needs. The mask comes disassembled and with a manual, encouraging kids and parents to put the parts together themselves, piece by piece, to build the finished product. This helps them to understand the product’s functionality and encourages a dialogue on pollution. The different coloured parts act as a simplifying tool for communication around the product functionality, and also allow users to individualise the product, giving them a sense of ownership and autonomy over their own safety.