How Under Armour fell flat during the athleisure boom

In less than two decades, Under Armour grew to become one of the biggest sports apparel brands in the world, touting a roster of sports celebrities like Steph Curry and Tom Brady. But now, the future of the company is uncertain. Sales growth at Under Armour has slowed in North America and its stock has fallen from its all-time highs. Can the apparel brand rebuild its momentum and catch the athleisure wave before it's too late, or will rivals Lululemon, Nike and Adidas take over?