This matt black Lynx bicycle helmet in size S/M (55-58 cm), model All-Road, features an In-mold construction. This In-mold construction combines a polycarbonate outer shell with an EPS inner shell. This combination reinforces the helmet for good protection but remains lightweight. The helmet's fit is universal and easy to loosen or tighten with one hand via the knob at the back. The antibacterial pads inside the helmet are washable and easily detachable via a Velcro bank. There are 24 ventilation holes, which ensure good airflow through the helmet for maximum ventilation. The bicycle helmet is simple to open/close with the buckles on the adjustable chin strap.