Mizuno Pro Breath Thermo Neck Black Warmer, 12JY0B01, 09,

Material: 92% polyester, 8% synthetic fiber (Breath Thermo) Unisex size (adult) ●BREATH THERMO: Breath Thermo is a moisture-absorbing, heat-generating material that absorbs moisture from the human body and generates heat, making it a comfortable, heat-retaining material.