The Upside The Upside - The Upside specially formulates a four-way-stretch jersey for this navy Sonia top, allowing complete freedom of movement for workouts requiring full range of motion. Jacquard woven with a diamond pattern, it's shaped to a racerback silhouette hallmarked with white arrow logo embroidery and complete with ribbed side panels outlined with pale grey trims. Style them with high-rise leggings to balance out the cropped profile.