Technology:Advanced 2 layer construction.Thermal inner face for next to skin comfort and superior wicking capability.Moisture wicking soft-touch waistband.Brushed outer face with 2 way knit for a comfortable next-to-skin fit.Flatlocked seams for maximum comfort when layering.Benefits:Lightweight insulation for year round activities.Composition:90% Polyester, 10% Elastane. Compare prices from: Gill in Men's Underwear