The PolarMax 4-Way Stretch Mock Zip Neck is a performance top packed with features! A Flatlock Seam lies flat within the garment, creating a more comfortable fit. You'll also get a full range of motion with that touch of Spandex incorporated into the top and the Acclimate Fabric wicks away moisture, keeping you dryer, faster and longer. This easy care 4-Way Stretch Mock Zip Neck is your ultimate adventure top! Heavy Weight 4-Way Stretch XG Fabric, 92% Acclimate Dry and 8% Spandex, Breathability and Wicking Properties, Quick Drying, Flat Seam Construction, Athletic, Slim Fit, Made in the USA, Fit: Tight, Material: Synthetic, Weight: Mid, Type: Top, Wicking Properties: Yes, Recommended Use: Hiking/Camping, Antimicrobial: Yes, Anti Odor: Yes, Quick Drying: Yes, Moisture Wicking: Yes, Model Year: 2020, Product ID: 566257, Model Number: 3C31D 010 XS, GTIN: 0785146365700