The posts are hypoallergenic, nickel free stainless steel with silicone backings. Items are packaged on individual earring cards and carefully wrapped in tissue paper for safe transport. If you would like a kraft jewelry box like the one pictured, please mark this as a gift at checkout. Orders will be shipped via USPS First Class Mail with a tracking number provided at the time of shipping. Please allow 1-3 days for processing as each item is made to order.