Necklaces are available in 19 or 22 inches for adult. * Hazelwood The hazelwood is specific in fighting: colic, acid reflux, vomiting, stomach issues, GERD, & eczema. * Black Onyx aids in stress, anxiety, and ADHD What is Hazelwood? Hazelwood works by creating a more alkaline environment in your body through direct contact with your skin, which may help to prevent and remedy many of the symptoms caused by acidosis (being too acidic) and by reducing free-radicals by having a high antioxidant effect through your pores. The wood absorbs excess acidity from your body until a balanced PH is reached. This has the potential to improve conditions caused by excess acidity, which can include skin issues such as eczema, internal gut issues such as ulcers, acid reflux, GERD, and heartburn. Gut Health