HeatFX's Ultralight fabric innovation is a combination of technically engineered fiber formations that provide superior warmth without bulk. Microscopic "pockets" inside the fiber create a thermal warming effect next to you skin.  

This fabric is designed with spandex to enhance fit, mobility, and moisture management.

• Functional fly opening
• Lightweight, HeatFX branded waistband
• Reduced bulk, flatlock seam construction
• Tagless labelling
• Body fit
• Ideal for activity level moderate to high

Keep your base layer selection simple. Take into consideration:  

Your Activity Level, Where You Will Be, and, How Cold You Will Get.

Made in Canada 🇨🇦

Fabric: 41% Polyester/ 33% Acrylic/ 23% Viscose/ 2% Spandex

Care Instructions: Machine wash cold. Do not bleach. Do not use fabric softener. Tumble dry low.  Do not iron.  Do not dry clean.