This is a non-slip hat made of Spandex that is worn under a scarf.
The volume on this hat is emphasized at the back of the head.
It has a pouch filled with padding which has a convenient small opening which allows you to adjust the amount of volume you prefer by simply removing or adding some of the padding.
It is a good option for those with short hair who would like to give the illusion of having long hair underneath their scarf.
Rest assured, with this volumiser, that your hat, as well as your scarf will stay in place all day long as the front of it is lined with a band of velvet that is sewn against the grain rendering it non-slip.