Your training may vary every day, but it's always done at speed. The Womens Hydropore Long Sleeve Half Zip Top from Jack Wolfskin is made for the job. It's a mid layer and a functional top in one, which makes it perfect for energetic training sessions of all kinds. It has a high collar for added protection and the zip opens down to the chest if more ventilation is needed. 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.