Hook and Eye closure. Material: 84%Nylon 16%Spandex. Body Shaper for tummy control: Stretchy fabric for easy to put on. Seamless design for invisible underneath any type of clothing. Open crotch design for convenient bathroom use. Silicone band holds garment in place. There is a pair of extra-longer straps for better adjust and fit. Shapewear with deep plunge, V-Neck and backless design, This bakckless shapewear could offer more support with underwire bra,and the Shapewear fit for Deep Plunge and Low back Dress. Shoulder strap design: Adjustable single shoulder and cross-tie method,the length of the strap could be adjust freely.. Size options: For this backless body shaper, there are many cup sizes to choose from, so you can find a more suitable one. Please wash undergarment before you wear it for the first time. Everyone has a different requirement for shaping effect. If you feel uncomfortable, please either take it off and wear it later, or exchange to a larger size..