Mid layer? Or functional top? The Womens Hydropore Jacket from Jack Wolfskin is both. And is therefore ideal for ambitious trails, jogging, speed hiking or any other outdoor activity you choose to do. The secret lies in the fabric. The fabric scores top marks for its exceptional moisture management because the fine yarn loops dry super fast. It also protects you from UV rays and has odour-inhibiting properties. The thumb loops are a useful little extra. They stop the sleeves riding up during more dynamic movement.