Keep your head warm and cosy with this Trekkers Thermal Insulated Hat. Designed with a heat trapping design to keep in the warm air, this hat comes with a comfortable fit, suitable for wearing all day. Finished with a soft brushed lining, these hats are perfect for wearing when temperatures are low.. 1 x Trekkers Thermal Insulated Hat Assorted Colours. Heat trapping design. Warm and comfortable. Soft brushed lining. One size. 3 colours. Shell: 100% acrylic, Lining: 100% polyester, Insulation 59% polypropylene 41% polyester