• Athletic Fit with 1/4 zip
• Engineered Body-Map Heatwave™ For More Warmth & Rapid Wicking
• Anti-Chafing Flatlock Seam Construction
• Polygiene® Mesh Anti-Microbial Ventilation Zones For Focused Perspiration Evaporation
• Raglan Sleeves for Comfortable Fit During Activities
• Reflective Hits at Nape of the Neck

• 4-Way Stretch Moisture Control/Breathable Heatwave™ with Integrated Spandex for Improved Stretch, Shape, and Maximum Comfort
• Ergonomically Placed Max Wick™ Fabric For Increased Breathability
• High-Performance Anti-Microbial Mesh at Perspiration Zones for Micro-Biome Balance & Odor Control

A base layer like no other - the Mapped Heatwave™ Top by Seirus® warms your core while perfectly managing ventilation and perspiration. With the insight of body heat-map studies this base layer merges 3 dynamically complimenting fabrics that deliver warmth where it is most needed, including extra warmth for the lower back and kidneys. As well as ergonomically placed Max Wick™ for increased breathability in areas where we run hot and Polygiene® anti-microbial mesh in highest vent areas. The benefit of these strategically placed materials is perfect comfort, no matter the intensity of your activity. The heat reflective properties of the Seirus® exclusive Heatwave™ material mean you can get the warmth you need in just one base layer, no more piling on so many layers just to go outside.