Listings commonly use brass or nickel-free metals; some items are 14K gold plated (gold over brass). Other materials noted include stainless steel and rubber components.
The listings show several closure styles: hook-and-loop (fishhook), hinged/snap closures, post closures (with disc or butterfly backs), and clip-on clasps.
Several listings explicitly state hypoallergenic or nickel-free construction. One listing specifically mentions hypoallergenic premium brass with thick plating.
Offerings include single-pair options and multi-pair sets; common counts shown include 3-pair and 9-pair packs.
Post-style backings described include disc-style (flat) backs, butterfly (friction) backs, and other post-closure hardware designed to keep the earring in place.