You don’t need heavy layers to be warm. HeatFX's innovative combination of fibres provides superior warmth and comfort without bulk. This long underwear has specially engineered pockets inside the fibres to create a thermal warming effect next to your skin.
HeatFX base layer features: moisture management to keep you dry, antimicrobial for freshness, and heat retention.
Fabric: 41% polyester/41% acrylic/18% Viloft viscose
Made in Canada