The Windwall is a wind-resistant fleece, that is almost like wearing a windbreaker. It is handy to only bring one layer with you when you are climbing or hiking all day.
Credit: McKenzie
Beyond that we wanted to specifically test each fleece for certain qualities, like how well they breathe, water and wind resistance, etc. We compared them side-by-side while jogging in each of them, I got them each wet and noted how long they took to dry, and we tried each of them on under jackets and harnesses to see how well they worked as a layer. They have all been climbed in and shoved into our pack. Then we came to our own conclusions about how useful and functional each jacket was
