Sleek V-Neck Open-Back Workout Onesie - BlackFlattering, Sculpting, and Ultra Stretchy One Piece Activewear Description: This V neck workout onesie is designed for both style and performance. Made from 75% nylon and 25% spandex, it offers a second skin feel with four way stretch, keeping you supported and comfortable during any activity. The open back design enhances breathability, while the contrast contour stitching creates a flattering, sculpted silhouette. Perfect for yoga, gym sessions,