Elasto-Gel Cranial Cap - Small/Medium - #CAP600 Elasto Gel Go to amazon.com Related posts The 9 best migraine hat 2022 FeatureProvide non-chemical headache reliefMigraine headaches, hypothermia, heat strokeMay be used for chemo-therapy DescriptionFits the contour of the head to give heat transfer uniformly over the whole area. This is for size Small/Med.