Handmade with love. Featuring lightweight plastic and stainless steel posts, with butterfly and silicon backs. Earrings are hypoallergenic, and nickel free, making them safe for those with sensitive skin...yay! We seal our earrings with a clear matte finish, however they are not waterproof. Remove prior to showering, swimming, etc. To clean, wipe gently with a dry cloth. All earrings are handmade, therefore no two pairs will be identical.