I bought the 12” Raw Cognac Amber Necklace for my 4 month old baby when he was beginning to show signs of discomfort from teething, and it definitely helps! I measured him before ordering, and the length is perfect for him. I also appreciate that the beads are small, which seems more comfortable than larger beads and looks adorable. He doesn’t seem to notice that it’s on. I’m very happy with my purchase from CanyonLeaf. Thank you!