The present invention relates to a shoe, in particular a sports shoe, having a flexible upper surrounding a foot, a closure panel arranged on an instep area of the flexible upper, and a tightening element arranged at the heel of the shoe. The tightening element is connected to the closure panel such that the closure panel, through the use of the tightening element, can be tightened against the instep area of the flexible upper to retain the shoe on the foot.