Shoe with a combination of lightweight upper construction

A shoe upper, comprising:

• first and second upper elements reconfigurable from an uncoupled state to a coupled state such that:
• in the uncoupled state, the first and second upper elements are separate parts unattached to each other;
• and
• in the coupled state, the first and second upper elements are joined to form a foot-receiving chamber configured for accommodating a foot of a wearer;
• wherein the first upper element comprises eyelets adapted to receive a shoelace;
• wherein the second upper element forms a footbed;
• wherein the second upper element comprises at least a first set of two wings protruding from a lateral side and a medial side of the second upper element, wherein the first set of two wings comprise a first merging area configured to attach the first upper element to the second upper element;
• wherein the first set of two wings extend beyond a heel area of the footbed in a longitudinal direction of the second upper element in the uncoupled state;
• and
• wherein in the coupled state, the first set of two wings forms the heel area of the shoe upper.