The swing LUNE is thought as a day bed.It is welcoming and protective, sober and elegant. The concentric circles which compose it, call up the movement, invite in the rocking and echo the surf of waves on the beach. The seat is maintained in its vertical position with kneecaps tightened by springs. The body of the user destabilizes this system and comes to create the balance (like a rocking chair). The pure geometrical forms of the structure allow to optimize the used quantities of materials. Steel can be recycled as well as cotton with is biodegradable. The pillow and the canvas are waterproof and replaceable.