The JD/One helmets benefit from the most modern manufacturing processes and technologies combined with timeless design. John Doe has developed a unique helmet shell for each helmet size to ensure maximum comfort; only sizes XS and S have the same outer shell. This makes it easier for you to find the JD/One helmet that suits your head and your style. The internal ventilation system is adjustable in several levels on the front and back of the helmet; it cools the air around your head while riding and safely wicks moisture and heat out of the helmet. Batteries must not be disposed of with household waste. You are legally obliged to return old batteries so that they can be disposed of correctly. You can hand in used batteries at a municipal collection point or at your local store. As a battery.
