Originally, the brand’s tennis shoe designs were distinctive for their use of twin-cupsole technology. Today, the Challenge sneaker takes this historic, tennis-inspired silhouette and transforms it into a contemporary urban style. In smooth, crisp white leather, the uppers are topped with neat perforations that ensure essential breathability. Branding on this timeless model is kept to a minimum for a sleek look, with understated lettering on the tongue and a signature green crocodile on the quarter.