BMW Genuine Motorcycle AirFlow 3 boots - size M10 AirFlow 3 boots: The AirFlow 3 is a lightweight ankle-boot with excellent ventilation the closest you can get to the feeling of wearing sandals in the saddle. Even when the air is hazy with the heat and sweat drops evaporate as soon as they hit the ground, the AirFlow 3 uses air circulation to keep feet cool and comfortable. Textile/leather upper -- AirTex webbing panels -- Reinforced shin and ankle areas -- Reinforced heels and toe caps -- Reflective strip on heel -- Removable, anatomically shaped insole Shaft length approx. 20 cm