Curvy Kate's Upfront Technology helps shape and lift heavy breasts. Made of nylon with spandex. 4-part, underwire cup has a sheer upper cup with mesh lining. Side support cup panel helps promote forward projection. Angled and vertical cup seaming shapes and supports full busts. Neckline edge is elasticized for a flexible fit. Tall, narrow center panel features a trendy keyhole at bottom. Wide underband helps stabilize and support large breasts. Wide-set, restricted stretch elastic straps fully adjust in back with coated metal hardware. Tall, smoothing powermesh sides and back have sewn-on elastic at edges. Hook-and-eye closure at back has coated metal hardware. Fitter Comments: Fit's true to size in cup, with medium projection and a firm band.