A few press-ups, a set of step-ups on a fallen tree trunk and a quick sprint to the next obstacle. When you're outdoors, nature provides the gym equipment. That's the way you like to do your training–and that's exactly what the Mens Grid Leggings from Jack Wolfskin were made for. These leggings are perfect for your daily winter workout on the fitness trail. The fleece fabric provides basic insulation and superb wicking performance. It is smooth, stretchy and odour-resistant–ideal attributes for intense outdoor training sessions. And if the temperature drops, just slip a pair of trousers on over the top.