NWT heather fleece half zip size LG. This tech-meets-casual hybrid fleece from Arc’teryx is destined for a life out on the trails, but it’s more than capable in the city, too. Crafted from the brand’s Alpenex II™ fleece, the technical layer will keep in warmth while a brushed back knit provides a cosy wool exterior that has a casual look and feel to it. 100% Polyester Alpenex II™ Heathered Fleece Fabric High Neck 1/2 Zip Fastening Sleeve Zip Pocket Embroidered Branding