ColdPruf Men's Premium Performance Thermal Base Layer Pants - Trim fit for higher activity levels offering maximum dryness and antimicrobial odor-control for all of your layering needs. Silk Weight 85% Polyester/15% Spandex Moisture Management Maximum Dryness Microban Anti-Microbial Protection Single Layer Flat Seamed Construction Front and Back Rise with Gussets for Athletic Fit Tagless Labeling Non-Binding Hemmed Cuffs for Comfort Style: 89B-BLK