It will take more than cold weather and freezing winds to keep you from mountain biking, and with the wind-blocking insulation of the Women's Ranger Windbloc Fire Jacket, there's an even greater reason to get out and shred. Starting with wind protection, Fox deploys Polartec Windbloc across the shoulders and lower back to fend off the bite of cold winds. Meanwhile, inside the jacket, you'll find zoned areas of fleece lining. This adds another level of insulation from the cold, retaining all the heat you generate while riding. In other key areas, breathability is optimised and ventilation aids airflow to prevent you from overheating. The result is excellent temperature regulation, ideal for the stop, start, uphill, downhill thrill of mountain biking. While it's not a superlight jacket, it's no heavyweight either. You're certainly not going to feel weighed down or restricted when you've got it on and you're in the flow of an exhilarating mountain bike ride. The polyester exterior is also tough and durable, meeting the demands of regular mountain biking. An extended drop tail keeps you nicely covered across the lower back and elastic cuffs keep the elements out.