The Mens Hydropore Jacket from Jack Wolfskin is a fleece & a functional top in one & it is therefore ideal for demanding trails, jogging, speed hiking or any other outdoor activity you choose to do. The secret lies in the Hydropore fabric. The fabric scores top marks for its functional attributes. The fine loop structure ensures good moisture management & it dries super fast. Hydropore also protects you from UV rays & has odour-inhibiting properties.