It has an open cut at the back.; 90% Polyester, 10% Elastane; Model Measurements: Height: 176cm (5'9'') Bust: 86cm (33in) Waist: 58cm (22in) Hips: 89cm (35in); The product on the model is S/ It's a size 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.