The pouch is made of HYPOALLERGENIC steel (Surgical stainless steel 316)
Dimensions: width x height x depth: approx. 10x13x1.5 mm
The resin layer ensures water resistance, but do not soak them unnecessarily, they may lose their shine.
 
dimensions and each piece may be slightly different from what you see in the picture, the material is a little unpredictable, but that's what makes them original :-)
The earrings will arrive on a cardboard name tag together with silicone stoppers