Design Philosophy Winter can provide some of the most epic riding days with cool, crisp air and snow dusted trails. Reset the thermostat with the updated MT500 Freezing Point Jacket featuring PrimaLoft® Gold Active Insulation and make even the coldest winter day a riding day. Multi Fabric Insulation. Beat the wind and cold with PrimaLoft® Gold Insulation panels on the sleeves, front torso and hood. This combined with stretch thermal softshell fabric with a new PrimaLoft® inner face on the back and lower sleeve gives you unrestricted movement allowing you to tackle the toughest winter trails. PrimaLoft® Gold Active Insulation. PrimaLoft® Gold Active insulation boasts class leading warmth to weight ratio, tiny pack size, water-repellency, 4 way stretch and superb breathability, making it the ultimate insulation for on-bike-wear.