The Nike React Miler in 'Celestine Blue' boasts a purposeful design catering to extended running sessions. One of its standout features is a breathable mesh upper, complete with strengthened eyestays for added durability. Moreover, with a soft foam collar and a roomier forefoot shape, this shoe provides ample space for natural toe splay during long runs. Its lightweight construction is complemented by a responsive Nike React midsole, which incorporates an elevated heel design derived from direct input from runners. Furthermore, the outsole of the Nike React Miler employs high-abrasion rubber strategically in the highest-wearing areas, ensuring longevity and traction during intense workouts.