The updated sneaker introduces several comfort-focused changes but keeps the same lightweight feel that has made the Cloud X lineup one of the brand’s most popular gym shoes. Retailing for $160, the Cloud X 5 is available in both men’s and women’s sizing. On Cloud X 5 training shoe - Women's The new On Cloud X 5 training shoe is available now in men's and women's styles. $160 at REIOn Cloud X 5 training shoe - Men's The new On Cloud X 5 training shoe is available now in men's and women's styles. The Cloud X 5 is classified as a neutral shoe with moderate cushioning and an 8 mm heel-to-toe drop.