Abstract: Headwear (2) for use in applying cold to a person's scalp, which headwear (2) is flat when it is not being worn, is foldable around a person's head (4) when it is being worn, and is securable on the person's head (4), by a plurality of fastener means (6), the headwear (2) being such that the folding nature of the headwear (2) and the plurality of fastener means (6) enables the headwear (2) to be folded as a close fit on the person's head (4) irrespective of different persons with different shapes and sizes of head, and the headwear (2) being such that is has double skinned portions (8, 10) which contain a cold retaining medium which gives up its cold to the person's scalp when the headwear (2) is being worn.