This bike helmet for the city is well designed, comfortable and light. Headband adjustment by a rear wheel, with protective foam. The chin strap adjusts easily, locking and unlocking is done with one hand, pressing a small button. Protection under velvety material chin with a Velcro strap to wrap. A small visor (black) gives a bike helmet aspect to this as soon as headphones for roller skating / skateboarding. The air vents on the helmet are sufficient and well ventilated head. Comes with spare foams.