Thermal comfort at its finest: The Activity Jacket provides cozy warmth in every season. From January to December: With our extremely versatile, ultra-warm jacket, you can make the most of your hikes. The Polartec® Thermal Pro® fleece offers the pleasant warmth of traditional fleece, while the soft material is extremely durable, ensuring the jacket looks great for a long time. The InterActive zipper adds extra versatility, allowing you to wear the jacket with any waterproof product from the InterActive range for additional protection in bad weather. A practical piece to pack and take along!.