Clip back earrings in three sizes that change colours. When cold it displays one set of colours and changes to different colours as the temperature warms. Suitable for non-pierced ears. Large = cold: dark green, yellow // warm: light green, bright green Medium = cold: dark purple, dark pink // warm: light purple, light pink Small = cold: light blue, dark blue // warm: pink, blue Extra small = cold: red, orange // warm: pink, yellow