Stella Ultra Boost– Two new colors for the Stella McCartney Ultra Boosts have been released on the main site today. Each has a multi-color design and uses the main features of the original Ultra Boost but have the Stella design midfoot overlays in place of the traditional stripes. If you are looking for a high end version of the Ultra Boost be sure to check them out now, in stock in sizes 5-10.5 for $260.