#1 selling technology in glove liners, now available for your whole body

• Athletic Fit
• Engineered Body-Map Heatwave™ For More Warmth & Rapid Wicking
• Anti-Chafing Flatlock Seam Construction
• Smooth Contrast Waistband for 'Stay-Put' Fit & Gusseted Undercarriage for Increased Mobility
• Reflective Hits on Legs

• 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

A base layer like no other - the Mapped Heatwave™ Bottom by Seirus® warms key muscles and arteries in your legs, increasing blood flow to your extremities, while also 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. 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.SHOP OTHER BASE LAYER


Men's Winter Weight Bottoms
Women's Winter Weight Top
Women's Winter Weight Bottoms
Men's All Season Top
Men's All Season Bottoms
Women's All Season Top
Women's All Season Bottoms