Air Max 90 'Royal' celebrates the retro runner’s 30th anniversary with a recrafted build that’s faithful to Tinker Hatfield’s original design. The upper . constructed from white mesh with grey suede overlays and TPU accents in royal blue . sits atop a white foam midsole with a visible Max Air unit that’s larger than its predecessor’s. A waffle tread rubber outsole is good for durable traction underfoot.