Only the originals will do with body heat often lost from you head wearing a hat is essential when temperatures fall the ultimate thermal hat this heat holders hat has an incredible tog rating of 36 with a special heatweaver 4 layer construction this menrsquos hat has been designed to hold more warm air close to the skin keeping your head warmer for longer the outer layer is a high bulk insulating yarn that has been brushed inside for superior insulating properties the next layer is a