GW-6661A HOOD GULL FIR 3MM
FIR (Far Infrared Ray) Lining
Lined with FIR fabric for excellent heat retention. Body heat generates warming far infrared rays.
FIR
The inner surface is lined with FIR nap. Recycling heat that would otherwise be lost, from escaping body heat, FIR nap generates far-infrared heat and keeps you warmer.