Free People - Back It up OnesieThrow it on and go! This cardio ready onesie features a form fitting silhouette with a buttery soft fabric, a bold strappy back, and a supportive built in bra shelf. It also includes a drop in back pocket and a 7 8 cropped length. Made from 80% polyester and 20% elastane, with a lining of 81% polyamide and 19% elastane. The size small has an inseam of 23. 5 inches, waist of 27. 5 inches, bust of 26. 5 inches, hips of 44 inches, and a rise of 10