Nike launched a new line of Dunk Lows called Pro B just before 2002. Among these was the 2002 Dunk Low Pro B 'Rainbow', which earned the nickname 'Viotech' because of its purple outsole. The sneaker's suede upper showcases a vibrant rainbow of colors, accompanied by an olive mesh tongue. Adding to its unique design, the shoe includes a Viotech insole featuring orange Nike branding.