The KYMIRA KYnergy fabric is a unique material in the way it regulates heat. Despite being lightweight, it warms up quicker than other fabrics and retains heat for 63% longer than fabrics of an equivalent weight. When it comes to long-term wear during cold weather this is invaluable. If you’re going to be outside for hours at a time for example, you need to ensure you’ll be kept warm.
The construction method of the KYnergy fabric is what affords these unique set of properties. The ceramic additives have been shown to positively affect thermal efficiency, summarised by this statement from this investigation:
‘Textiles containing ceramic additives, which are able to absorb and emit back the thermal energy from the human body, can be used to improve the thermal properties of the fabric.’ 
The type of construction methods used in producing infrared fabrics leads to increased temperatures in those wearing them. Thermal investigation  into the effects of infrared fabrics has shown that they can be up to 2.11 degrees Celsius warmer, which is a dramatic difference, especially when it comes to considering winter clothing.
Finally, the ‘recipe’ used to create infrared fabrics has been shown to effect on the warmth of the garment . This process occurs by adjusting the emissivity of the infrared, which in turn has a knock-on effect on the stimulation of circulation and ultimately the thermoregulatory effects of the fabric on the wearer. Wearing infrared fabrics will ultimately boost your circulation and keep you warm and comfortable through whatever the winter months throw your way.