A closure system (200, 300, 400, 500, 600) comprising: a first closure element (VE21, VE31, VE41, VE51, VE61) comprising a connecting region, which is or can be connected to an object, and a closure region which comprises at least one first magnet; and a second closure element (VE22, VE32, VE42, VE52, VE62) comprising a connecting region, which is or can be connected to an object, and a closure region which comprises at least one magnetisable material, optionally at least one second magnet, wherein the first magnet in the first closure element (VE21, VE31, VE41, VE51, VE61) and the magnetisable material, optionally the second magnet, in the second closure element (VE22, VE32, VE42, VE52, VE62) attract each other, such that the first closure element (VE21, VE31, VE41, VE51, VE61) and the second closure element (VE22, VE32, VE42, VE52, VE62) are held together in a first position by the attractive force without the closure system (200, 300, 400, 500, 600) being closed, wherein the first closure element (VE21, VE31, VE41, VE51, VE61) and/or the second closure element (VE22, VE32, VE42, VE52, VE62) comprise(s) at least one engaging element (213, 313, 413, 513, 613), and the first closure element (VE21, VE31, VE41, VE51, VE61) and/or the second closure element (VE22, VE32, VE42, VE52, VE62) comprise(s) at least one complementary engaging element (214, 314, 414, 514, 614), wherein the at least one engaging element (213, 313, 413, 513, 613) can be moved relative to the at least one complementary engaging element (214, 314, 414, 514, 614) in order to close the closure system (200, 300, 400, 500, 600) in a second position, such that it cannot be opened unintentionally, characterised in that the closure system (200, 300, 400, 500, 600) comprises a lever using which the engaging element (213, 313, 413, 513, 613) can be moved into and/or out of engagement with the complementary engaging element (214, 314, 414, 514, 614), wherein the lever is connected to the first closure element (VE21, VE31, VE41, VE51, VE61) or to the second closure element (VE22, VE32, VE42, VE52, VE62) in a pivot joint, and wherein the engaging element (213, 313, 413, 513, 613) or the complementary engaging element (214, 314, 414, 514, 614) is encompassed by the lever. a first closure element (VE21, VE31, VE41, VE51, VE61) comprising a connecting region, which is or can be connected to an object, and a closure region which comprises at least one first magnet; and a second closure element (VE22, VE32, VE42, VE52, VE62) comprising a connecting region, which is or can be connected to an object, and a closure region which comprises at least one magnetisable material, optionally at least one second magnet, wherein the first magnet in the first closure element (VE21, VE31, VE41, VE51, VE61) and the magnetisable material, optionally the second magnet, in the second closure element (VE22, VE32, VE42, VE52, VE62) attract each other, such that the first closure element (VE21, VE31, VE41, VE51, VE61) and the second closure element (VE22, VE32, VE42, VE52, VE62) are held together in a first position by the attractive force without the closure system (200, 300, 400, 500, 600) being closed, wherein the first closure element (VE21, VE31, VE41, VE51, VE61) and/or the second closure element (VE22, VE32, VE42, VE52, VE62) comprise(s) at least one engaging element (213, 313, 413, 513, 613), and the first closure element (VE21, VE31, VE41, VE51, VE61) and/or the second closure element (VE22, VE32, VE42, VE52, VE62) comprise(s) at least one complementary engaging element (214, 314, 414, 514, 614), wherein the at least one engaging element (213, 313, 413, 513, 613) can be moved relative to the at least one complementary engaging element (214, 314, 414, 514, 614) in order to close the closure system (200, 300, 400, 500, 600) in a second position, such that it cannot be opened unintentionally, characterised in that the closure system (200, 300, 400, 500, 600) comprises a lever using which the engaging element (213, 313, 413, 513, 613) can be moved into and/or out of engagement with the complementary engaging element (214, 314, 414, 514, 614), wherein the lever is connected to the first closure element (VE21, VE31, VE41, VE51, VE61) or to the second closure element (VE22, VE32, VE42, VE52, VE62) in a pivot joint, and wherein the engaging element (213, 313, 413, 513, 613) or the complementary engaging element (214, 314, 414, 514, 614) is encompassed by the lever.