The Norrona Svalbard Warm 1 Sweater is a thin & comfortable stretch fleece sweater with a 1/3 front zipper. The Warm 1 is a 3-season hybrid piece that can be used both as a mid & first layer. Its main features include two hand pockets, one chest pocket with a zipper, integrated hand gaiters & a high neck. Features Hand pockets Zipper chest pocket Integrated hand gaiters High neck 1/3 front zipper Glossary Polygiene Innovative odour controlling technology using silver salt, a highly effective antimicrobial made from recycled silver, to inhibit growth of microorganisms. Eco-friendly Polygiene is bluesign-approved & on the Oeko-Tex list of approved products. warm 1 Weighing under 200 grams/m, these are our lightest fleeces. Perfect as a mid-layer, or wear it instead of a jacket without compromising on insulation & breathability. These fleeces are among the best in the market. Their unique constructions & structures are perfect for different types of activities, as they trap warm air without stopping moisture transport. When used alone, the fabrics are open enough to allow air to circulate, making you feel comfortable in milder conditions. Under a shell they provide excellent insulation values.