The Jack Wolfskin Men's Jasper Flex Jacket is built for hiking in adverse weather conditions. It is made from an extra soft and smooth shell fabric, which together with the flex insert on the upper back and thin mesh lining delivers good wear comfort when you are on the move – even during prolonged periods of rain. For more ventilation, simply open up the pit zips. In fine weather, you can detach the hood and stash it one of the many pockets.Using the System Zip you can zip in a compatible fleece jacket for use as an inner jacket. Teaming two jackets in this way creates a winter-ready combination of weather protection and insulation.