#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 Polygiene Mesh Anti-Microbial Ventilation Zones For Focused Perspiration Evaporation 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 High-Performance Anti-Microbial Mesh at Perspiration Zones for Micro-Biome Balance & Odor Control 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 Mapped Top Men's Mapped ¼ Zip Mock Neck Top Women's Mapped Top Women's Mapped ¼ Zip Mock Neck Top Women's Mapped Bottoms Men's Winter Weight Top 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