The Billie Eilish x Nike Air Alpha Force 88 SP ‘Triple Red’ floods the upper in a bright crimson hue, built with recycled synthetic leather with a padded textile collar. Made with recycled TPU, an adjustable forefoot strap combines with traditional lace closure for a locked-in fit. ‘AAF88 Force’ is inscribed in black lettering atop the tongue, while dual branding adorns the sockliner. A polyurethane midsole in a matching red finish packs an encapsulated Air-sole unit in the heel for lightweight cushioning.