A closure device includes a first closure part which has a body, and a second closure part. A locking element and an engagement portion in a closing position are mutually engaged in such a manner that the first closure part and the second closure part are locked to one another. The first closure part has a first magnetic installation, and the second closure part has a second magnetic installation, said first magnetic installation and said second magnetic installation when placing the first closure part and the second closure part against one another interact in a magnetically attractive manner. The at least one locking element is magnetically configured in such a manner that the at least one locking element in the closing position by way of the first magnetic installation and/or the second magnetic installation is loaded in the direction of engaging with the at least one engagement portion.