This machine-washable pillow from John Lewis is filled with 100% natural wool making it the perfect choice for your child. Wool's natural resistance to bacteria means that this pillow is naturally hypo-allergenic and naturally temperature regulating. The soft 100% cotton cover gives a soft and comfortable finish so your little one is sure to have a good night's sleep. Warning : Not suitable for children under 12 months. Good to know : Take care to avoid your letting your baby overheat: between 16 and 20°C is the recommended room temperature. We recommend that you use a thermometer to check the room temperature. Please remember that all babies are different, therefore it is important to check your baby regularly to make sure he or she doesn't overheat or get too cold. It is normal for their hands and feet to feel cooler, so the best way to check your baby's temperature is by feeling their tummy or the back of their neck. If the skin is hot or sweaty, remove one or more layers.