My daughter has very sensitive ears. I've made my own for her for lots of years with plastic posts. I wanted to find some all the time earrings for her that didn't irritate her ears and didn't cost an arm and a leg. So I went back to store where I had her ears pierced originally and found out what particular metal was used when I got them pierced. She's had no issues with those original piercing studs but nearly any other metal earring has given her issues. Redness, irritation, pain, scabs... We've been excited and relieved these do NOT irritate her ears what so ever! The value is great. 30 pairs for the price is fantastic! We chose set 1 with all the cute animals and some cute pearl looking sets. (We did throw away the pot leaf earrings though.) My daughter is 7 and all of the pairs she has worn has been size appropriate for a small ear, and I as an adult can wear them as well size wise. They come in a small box and include 2 card holders if you want to put them all on the cards for easy display in a jewelry box. These were so cute and thankfully non irritating we bought another 30 pack set from the same brand (TAMHOO) with different options.