The ScentBlocker Men's Koretec Heavyweight Scent Control Base Layer Pantsis your go-to, hardworking first-layer. ScentBlocker's exclusive S3 technology helps keep stink down while keeping you warm, without breaking the bank.Features:S3 Silver Antimicrobial Technology For Odor PreventionSmooth Polyester Fabric With A Light Fleece Lining Keeps You Warm While Retaining Versatility Elastic Waistband For A Secure FitFlatlock Seams Ensure All Day ComfortTapered Legs For Easy Layering