Meteor MV29 23263 Bicycle Helmet Properties: A bicycle helmet is designed to protect your head while cycling. It's also important that it doesn't cause discomfort, even on longer rides, and that it has a stylish appearance. The MV29 is the perfect choice with these features. It's suitable for a variety of cycling activities. This helmet is the best way to begin your road cycling adventure. The lightweight construction, aerodynamic shape, and dynamic design will satisfy every user. The shell is made of highly elastic EPS polystyrene, which absorbs the stresses of a fall. Its protective effect stems from the material's structure, which contains countless microscopic air pores. An additional advantage is that it does not absorb water or sweat. The removable visor increases the surface area protecting against wind and blinding sun. The use of a soft, pleasant to the touch and removable lining guarantees very comfortable use of the helmet during long trips. Quick and easy size adjustment is possible thanks to the FIT SIZE system, a multi-stage, smooth adjustment ring. Using one hand, you can adjust the fit to your head in seconds using a small knob located on the back of the helmet. The helmet is equipped with 25 vents, ensuring constant air circulation around the head and heat dissipation – the AIR FLOW system. Adequate ventilation protects the scalp from excessive sweating. Technical data: Outer shell material: PVC Absorbent material inside: EPS Certificate - product complies with the requirements of Directive 89/686/EEC and the EN 1078 standard Helmet dimensions: Size Circuit Libra M 55 - 58 cm 250 g L 58 - 61 cm 250 g Properties: AIR FLOW system - the ventilation system guides the air flow through the holes in the helmet shell without negatively affecting its stability Removable canopy - thanks to the quick assembly system, you can easily increase the surface protecting against wind and blinding sun QUICK-RELEASE system - quick-release buckles FIT SIZE system - headlock multi-stage ring for smooth circumference adjustment Velour lining - exceptionally soft, delicate to the touch, increases comfort of use, does not catch on hair Removable lining elements - it's easier to keep sweat-absorbing elements clean when they can be washed and dried efficiently.