The PolarMax Boy's Quattro Fleece Mock Neck is perfect for layering both on and off the slopes. This ultra-soft top is constructed with Xtreme Expedition Weight Acclimate Dry Polyester for moisture-wicking, quick drying comfort and features Clean Seams to reduce chafing during activity. And 4-way stretch fabric provides unmatched mobility. Xtreme Expedition Weight - Athletic Fit, Weight - 8.0oz., 92% Acclimate Dry Polyester/8% Spandex, Brushed Face Fleece, Superior Acclimate Dry Moisture Wicking, Intense Quick Drying, 4-Way Stretch Fabric, Clean Seam Next-To-Skin, Made in USA, Fit: Loose, Warranty: One Year, Material: Synthetic, Weight: Heavy, Type: Top, Wicking Properties: Yes, Recommended Use: Snow, Antimicrobial: Yes, Quick Drying: Yes, Moisture Wicking: Yes, Model Year: 2020, Product ID: 521432, Model Number: 4G61D-GM TRUE BU XS, GTIN: 0785146583357