The PolarMax Men's 4-Way Stretch Tight is a heavyweight performance base layer. This body form fitting pant is constructed with Acclimate Dry Polyester for moisture-wicking, quick-drying comfort, and features Clean Seams for next-to-skin comfort and reduced chafing during strenuous activity. 4-way stretch fabric allows for mobility both on and off the mountain. Heavyweight First Layer - Body Form Fitting, Weight - 7.5oz, 90% Acclimate Dry Polyester/10% Spandex, Superior Acclimate Dry Moisture-Wicking, Intense Quick Drying, 4-Way Stretch Fabric, Clean Seam Next-To-Skin Comfort, Made in USA, Fit: Compression, Warranty: One Year, Material: Synthetic, Weight: Heavy, Type: Bottom, Wicking Properties: Yes, Recommended Use: Snow, Antimicrobial: Yes, Anti Odor: Yes, Quick Drying: Yes, Moisture Wicking: Yes, Model Year: 2020, Product ID: 521416, Model Number: 3C12Y 060 S, GTIN: 0785146019719