The Air Max 90 NRG 'Venn Diagram - Shimmer Polka' brings a unique look to the classic runner. The shoe's upper includes canvas paneling on the toe box, collar and mudguard, all of which are highlighted by a polka dot print. Also built with leather, including tumbled leather on the Swoosh, the signature TPU accents appear in translucent fashion, while a Venn diagram graphic on the tongue adds Nike branding. Underfoot, visible Max Air in the heel of the midsole provides cushioning.