Description Ultra-light insulated windproof pull-on with innovative moisture management. The Montane Fortes Nano pull-on is your essential running jacket for cold-weather training, offering a perfect blend of warmth, protection, and lightweight performance. This innovative running smock features a lightweight insulated jacket design, crafted with a durable nylon ripstop outer. It's engineered to be exceptionally windproof, shielding you from biting winter winds without weighing you down. Inside, the highly breathable APT liner actively manages moisture, keeping you dry and comfortable even when you're pushing your limits. What truly sets the Fortes Nano apart is its strategic use of PrimaLoft Gold Active insulation. This advanced insulation provides efficient warmth in all conditions, and it's intelligently mapped throughout the jacket to focus heat where your body needs it most, while simultaneously reducing overall weight. The result is a warm running jacket that delivers targeted warmth and unrestricted movement, so you can stay focused on your stride. Technology Barrier Tough mini ripstop outer with acrylic coating for weather protection. DWR with no intentional use of PFAS chemicals (1.6 CFM) Insulation PrimaLoft® Gold Active Vent designed for thermal efficiency, breathability and moisture management Air Permeable Technology Breathable 10D nylon ripstop lining that maximises breathability (10CFM) and insulation Offset Seams Improve construction, durability and comfort Body Mapped Insulation No insulation under the arms to reduce bulk and maximise breathability Materials Outer: 100% Nylon (recycled); Lining: 100% Polyester (80% recycled) BARRIER TOUGH. Lightweight Ripstop. Barrier Tough is a densely woven mini ripstop fabric made from super lightweight 12D recycled Nylon. It offers excellent abrasion resistance and is finished with a DWR without the intentional use of PFAS Chemicals. PRIMALOFT GOLD. Efficient and Effective Insulation. PrimaLoft® Gold Active Vent insulation strategically uses microfibres for industry leading performance. Enabling air flow and actively managing moisture by allowing water vapour to escape, to regulate body temperature for all day comfort. It's warm, durable, and soft, featuring 4-way stretch to allow a wider range of motion so you can move freely during any activity. APT. Air Permeable Technology. APT (Air Permeable Technology) maximises insulation and warmth, makes the garment work more efficiently and ultimately, improves user comfort. Constructed using recycled ripstop nylon in 10D offering <10 CFM with a grade 4 DWR without the intentional use of PFAS chemicals.