The Hazelwood is specific in fighting: upset tummy, gluten sensitivities, acid reflux, heart burn, vomiting, stomach issues, ulcers, & eczema. Sized to fit: 16 inches fit 14-19 years. 14 inches fits 12-16 years Hazelwood: buy as close to the size match as possible as Hazelwood will need to be replaced every 3-12 months, depending on the unique acidity level of the individual. Amber, you can buy a bit larger if you'd like (not too big) as it will last a lifetime! 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.