The Lumen Green is a colorful kinetic indoor hanging mobile constructed with colorful fabrics stretched over metal framing. The fabrics are tough and vivid and easily cleaned. All the arms and fabric disks move independently 360 degrees. Each kinetic art mobile is handmade and hand balanced and signed by the artist Joel Hotchkiss. No assembly is necessary ... just hang it up and enjoy! 22 in. h x 44 in. w, interiors only.