The Patagonia Capilene Midweight Bottoms are constructed out of moisture-wicking, quick drying performance fabric and feature Polygiene permanent odor control. All fabric is bluesign approved. Slim Fit, Polartec Power Grid - 97% Polyester/3% Spandex with Polygiene Permanent Odor Control, Fair Trade Certified Sewing, bluesign Approved Fabric, Fit: Tight, Warranty: Lifetime, Material: Synthetic, Weight: Mid, Type: Bottom, Recommended Use: Snow, Antimicrobial: Yes, Anti Odor: Yes, Quick Drying: Yes, Moisture Wicking: Yes, Model Year: 2019, Product ID: 495877, Model Number: 44486 BLK S, GTIN: 0190696385083