The perfect first pillow for young kids. MiniJumbuk's SleepCalm Kids Wool Rich Pillow helps to regulate temperature by improving airflow around the head and face, preventing overheating for a more comfortable sleep. The cotton casing keeps the filling in and the dust out. It also allows the skin to breathe, keeping your child's face and head comfortable and dry ensuring a healthy night's sleep. Cotton Casing with Wool Rich Fill The natural cotton casing of the SleepCalm Kids Wool Rich Pillow is soft to touch and allows the face and skin to breathe while your child sleeps. The inner filling, comprised of 60% wool and 40% polyester, combines natural Australian wool with spiral man-made fibres to help the filling stay soft and springy while gently supporting your child's head and neck. And a balanced, natural sleep starts with wool. Wool is a remarkable, breathable fibre that regulates the body's temperature. This is vital for young children whose small bodies are less capable of adapting to a wide range of temperatures.