Cold weather can't stop you when you're wearing the ColdPruf(R) Men's Performance Pant. This base layer was designed with ColdPruf(R) Technical Fiber Polyester and SILVADUR(TM) Intelligent Freshness. This controls odor and inhibits bacterial growth on fabric. The fabric wicks and aids in moisture evaporation as well. The gussets and front and back rise on the Men's Performance Pant provide superior comfort and fit. Fit & Design: ColdPruf(R) Technical Fiber Polyester with SILVADUR(TM) Intelligent Freshness Controls odor and inhibits bacterial growth on fabric Wicks and aids in moisture evaporation Comfort Waistband Tagless Flat Seams for added comfort Gussets and Front and Back Rise provide superior comfort and fit 96% Performance Polyester 4% Spandex Fabric Weight: 6.25 oz. Model: 98B