It has an open cut at the back. The product is lined, it can be removed. 85% Polyester, 15% Elastane; Model Measurements: Height: 177cm(5'10'') Bust: 79cm(31in) Waist: 60cm(23in) Hips: 89cm(35in). ); The product on the model is size S/36/8.;; Hand wash in warm, soapy water after each use. Do not use bleach or detergents. Do not leave your swimsuit waiting in a wet, stuffy, closed, plastic bag. Lay it upside down and dry it in the shade. Fluorescent colors will fade in the sun, chlorinated water and sun oil will ruin your swimsuit.