This report looks at five core aspects of detention conditions in EU Member States: the size of cells; the amount of time detainees can spend outside of these cells, including outdoors; sanitary conditions; access to healthcare; and whether detainees are protected from violence. For each of these aspects of detention conditions, the report first summarises the minimum standards at international and European levels. It then looks at how these standards are translated into national laws and other rules of the EU Member States.