Soft, open-pored foam, density 45, to wear day and night. Anatomically shaped to ensure an optimum fit. Recess for larynx. With skin-friendly cover (100% cotton). Adjustable Velcro closure.Children's size with chin height 5.0 cm or 6.0 cm (2.0 or 2.4 inches). Available in blue only.Indications:For whiplash injuries to the cervical spine, painful torticollis, after operations of the cervical spine and after torticollis operations, cervical spine syndrome. Measurement point: A- circumference of neck, K- chin height (tip of chin to sternoclavicular joint) / cm.Please indicate chin heights 7.5 cm, 9.0 cm or 11.0 cm .