The design of the 2IN trekking socks was inspired by research into the needs of the feet during long walks. The two-layer system helps prevent the fabric or seams of the shoes from rubbing against the skin, thus eliminating friction and blisters. The two layers ensure that your feet are comfortably cushioned while also helping to absorb impacts when they hit the ground. 3D structures enhance protection in the most exposed areas, such as the instep or Achilles tendon. The short version of the 2IN trekking socks is ideal for summer walks: the breathable areas of the inner layers, combined with Cool Air Flow technology, provide a constant airflow, keeping your feet dry and at the right temperature.