What's inside our Serene Smelly Balls Set? - 4 unscented ethically sourced wool felt balls with branded charm and elastic string for easy hanging - 5ml (0.17 fl oz) Native Trees fragrance oil - Instructions and bonus postcard, together in our little ‘keep pouch’ which can be used to store your little treasures later! Love the outdoors and being surrounded by lots of nature? Our Serene balls represent rainforest, bush ambience, driving through green nature, and feeling at ease. Designed to help you feel closer to nature. Paired with our refreshing Native Trees fragrance oil. An enchanting blend of fresh and natural scents featuring essences of pine, eucalyptus, wattle, and woolly bush, transporting you to the heart of the Australian wilderness.