All-round protection for windy hiking weather: Jack Wolfskin have made the Men's Sonic Vent Jacket jacket from particularly soft and supple fabrics. So that provides you with excellent wear comfort every step of the way. The Stormlock fabric makes it fully windproof. And at the sides Jack Wolfskin have used very stretchy Flex Shield for improved freedom of movement. The Sonic Vent is also so breathable that when you pick up the pace, the water vapour that is created is transported to the outside.