A perfect one-hitter for winter vacations The North Face ThermoBall Eco Snow Triclimate Jacket delivers on the promise of previous ThermoBall Triclimate jackets this time with an eco-friendly construction. This 3-in-1 ski and snowboard jacket features a removable inner layer made with toasty synthetic insulation letting us layer up when it's cold on the hill and then ditch the shell when we head into town for dinner.