The Nitro Pullover from the Macpac Alpine Series is the ultimate way to keep warm on your outdoor adventures this winter. Its packable, quick-drying, breathable and warm and the Polartec Alpha Direct fleece is moisture wicking when you're moving and warm when you're not. You can wear it on its own or over a T-shirt when hiking, climbing or touring or layer 2 in colder conditions to keep you toasty warm. The Macpac Alpine Series is the direct result of their partnership with the New Zealand Alpine Team (NZAT). This team of elite mountaineers demand premium lightweight equipment that doesn't compromise performance. The main and inner fabrics are bluesign approved, which means they were manufactured with the responsible use of resources.