Mens Nike Flex Stride Running Shorts Nike Free Trainer 5.0 2 Essential a new look as part of their Fall/Winter 2014 lineup. Dressed in a Transparent, Black and Light Magnet Grey color scheme. Built with a mixture of synthetic and leather material combination. This edition of the Nike Free Trainer 5.0 2 Essential is now currently available at select Nike Sportswear retailers, including Afew.