Uphillsport® Tactical collection is based on the experience with Finnish military. Co-operation in development and understanding the battlefield demands makes Uphillsport®’s Tactical socks the best sock a soldier can have. Weather conditions in Finland are very challenging. Temperatures vary from -52 °C to +35 °C, which builds a huge demand of performance for the socks. Usage is rough with dirt and sand easily going inside the boot. Socks need to be warm, breathing, comfortable and very durable.