Meteor bicycle helmet Gruver M 55-58 cm white-black-orange 24751 The Meteor helmet will guarantee maximum head protection while riding a bike, scooter, rollers, roller skates, quad or skateboard. Interesting design with reflective details. Light, ergonomic design.  Shell made of highly stretchy polystyrene EPS protects against injuries absorbing all the stresses that may be generated during a fall. Detachable visor. The helmet gained size adjustment using a multi-stage ring (closing Fit Size -headlock) and special buckles. The lining elements are detachable, so they can be washed or dried. Constant air flow provides 23 ventilation holes with Air Flow. Helmet system with countless microscopic air pores. Technical data: · Outer shell material: PVC Inner absorbent material: EPS· Certificate - product complies with the requirements of the European standard EN 1078· size M: adjustment 55-58 cm· System Fit Size - headlock multi-stage ring smooth adjustment of circumference;  using one hand you can fit the helmet to your head without problem using a small knob located in the back part of the helmet· Antibacterial interior – soft, pleasant touch lining, which does not catch on hair, prevents growth of bacteria and reduces unpleasant odor caused by sweat · System Air Flow- constant circulation of air around the head and dissipation of heat · System Fly Net - mesh located in front ventilation holes, protects the head from insect bites while driving in warm and humid conditions Quick-Release System - buckles fastener Removable components lining --it's easier to keep the sweat-absorbing elements when they can be washed and dried efficiently