The mountain path gets rougher as you start to gain height. In the distance, the summit beckons. And as the air gets cooler, the DNA GRIZZLY shows what it can do, keeping you warm and protecting your neck from the chilly mountain breeze.This robust jacket is made of very warm POLARTEC® fleece. The windproof fabric on the collar and shoulders has a stylish diamond grid structure and is combined with a warm synthetic insulation made of recycled polyester. The pit zips provide a cooling flow of fresh air when you’re working up a sweat on that last steep climb to the summit.