Red Panda is super cute!
The metal parts (the fittings and hooks) are stainless steel - they are not coated. Stainless steel does not cause nickel sensitivity or allergy.
The earrings come with small silicone stoppers for the hooks.
Height of the earring without the fitting and hook: 73 mm
Width of the owl: 47 mm
Avoid exposing your earrings to water and chemicals (such as hairspray, etc.).