The Holy Grail of base layers.Single-layer, jersey knit fabricFabric Weight: 6.5 oz Fiber Content: 85% ColdPrufA(R) Technical Fiber Polyester with SILVADUR(TM) Intelligent Freshness / 15% SpandexFeatures SILVADUR(TM) technology to minimize odor on the fabricWicks moisture and dries quicklyBrushed interior for warmth and comfortPants sit at natural waistlineAnkle lengthFlat seams to prevent chaffingWide, yoga-style waistbandStyle #52BCare Instructions: Machine wash warm with like colors. Use only non-chlorine bleach. Tumble dry low and remove promptly. Low iron, if needed. ColdPruf Athletic Fit - Close moves with you fit.Our most versatile layer - great for base layer, casual wear, and/or active wearRated for Cold to Extreme Cold and Low to High Activity