The afew x Diadora N9002 "Master Formula" is a collaborative sneaker with Dusseldorf-based retailer afew. For the joint project, the sneaker shop enlisted the help of imaginary mad scientist Dr. Wefa to formulate the design with these key ingredients: love, passion, diversity, and friendship. This limited edition sneaker is composed of a black and purple nubuck and leather upper with a white leather lining. The multicolored afew branding runs across the side panel, and the sneaker is also complemented by a Master Formula patch and mini Diadora logo located on the mudguard.