Free People Movement Black Ribbed Onesie. Open back with straps crossed in back. Size Women's Medium. Compressive ribbed design with a scoop neckline and bold strappy back that keeps you looking and feeling cool as you work out. Moves-with-you stretch. Thick material. 7/8 cropped legs Medium impact. Washed & worn once. Material: 87% Polyamide, 13% Elastane FP Movement A destination for life well-lived, Free People Movement offers performance-ready activewear, practice-perfect styles and beyond-the-gym staples. We believe in the power of community, in supporting and lifting each other up and always.