This is a halter-neck bodysuit. The zipper allows you to adjust how much the chest area opens. Size: Free Please ignore the alphanumeric characters after "◾️" as they are for management purposes. If you wish to purchase multiple items, please provide these numbers, and it will be helpful. Photoshoot Gravure Fantia - Color: Black - Design: Zippered, High neck - Style: Bodysuit - Back style: Open back Thank you for looking.