Blackrock's HEAT Thermal Foil Insoles are aluminium-backed to reflect cold air away from the feet. A thick foam layer provides thermal insulation, while the felt covering offers enhanced comfort. A cutting guide is included to indicate where to trim for a perfect size fit.

Key Features

• Reflective aluminium foil to retain heat
• Thick foam layer reduces stress on the heel
• Thermal insulation
• Felt covering
• Cutting guide included to trim to size