The cute pozette earrings are my graphics transferred to a special polymer and then cast in resin for durability and extra shine. Each flake is unique :-) The case is made of HYPOALLERGENIC steel (Surgical stainless steel) Approximate dimensions: width x height x depth approx: 13x10x1.5 mm The earrings are waterproof thanks to the resin layer, but do not soak them unnecessarily so they do not lose their shine. They will arrive on a cardboard name tag along with the silicone stoppers.The dimensions and each piece may be slightly different from what you see in the picture, the material is a bit unpredictable, but that's what makes them original :-)