Campus 00s 'Grey Gum'The adidas Campus 00s 'Grey Gum' features a grey suede upper, lined in terry cloth and accented with white serrated leather three stripes. Trefoil branding graces the padded tongue and back tab, while 'CAMPUS' is stamped on the lateral side. The sneaker sits atop an off white rubber midsole built with stitched sidewall construction. A herringbone tread gum rubber outsole provides grippy traction underfoot.