New Black Tank Binder small The gc2b patented design uses a double panel binder made with a nylon spandex blend and cotton for extra flattening effect. The binding panel does not go below the chest, so it does not bind your stomach. This material is breathable; it can be comfortably. *Provided for reference. Each body is unique and even people with identical measurements may best fit different sizes. Email the care team at support@gc2b.info for advice or Check the Sizing Page for more details.