NWT. Small. Girlfriend Collective Bike Unitard Romper in Midnight (navy). A bike short-length compressive unitard with a scoop neck, low back and built-in bra. Bike short unitard/romper. Built in bra for easy wearing. Scoops lower in back. Navy color. From Girlfriend Collective: One and done. The Bike Unitard is a super easy one piece designed with our soft-yet-sturdy signature compressive fabric that's made from recycled plastic water bottles. We made it with a deep scoop back and nixed the waist and center front seams so it molds to your every move. Oh, and it has a built-in bra. What can we say, we're here to support. Made from 79% recycled plastic bottles (RPET) and 21% spandex