Main Fabric: Polartec® Classic Micro®, 100% Polyester SW149 | Size: XS-XL | Wt: 230 g. (8.1 oz.) • Polartec® Classic Micro® has a great warmth to weight ratio with a soft hand. • Half zip instead of ¼ zip for maximum ventilation and greater on/off ease. • Hood fits snugly around head and face to keep in warmth. • Flat seams are set to minimize chafing from pack straps and harness. • Thumbholes to help keep sleeves in place.