pyöräilykypärää

Pyöräilykypärä, also known as a bicycle helmet, is a protective gear worn by cyclists to safeguard their heads from injury during a fall or collision. It is designed to absorb impact energy and distribute the force over a larger area, reducing the risk of serious head trauma such as concussions, fractures, and brain damage.

Modern bicycle helmets are typically made from lightweight materials like expanded polystyrene (EPS) foam, encased in a hard outer shell, usually made of polycarbonate. This construction allows the helmet to deform and crush upon impact, dissipating the energy that would otherwise be transferred to the skull and brain. Many helmets also feature a retention system, commonly a chin strap, to keep the helmet securely in place during an accident.

The effectiveness of bicycle helmets in preventing head injuries is well-documented. Numerous studies have shown that wearing a helmet significantly reduces the likelihood and severity of head injuries in cyclists. While some debate exists regarding the extent of protection in all types of accidents, the consensus among safety organizations and medical professionals is that helmets offer a substantial benefit.

Different types of cycling helmets are available, catering to various cycling disciplines. Road cycling helmets are generally lightweight and aerodynamic, with ample ventilation. Mountain biking helmets often offer more coverage, particularly at the back of the head, and may include a visor. Commuter helmets prioritize visibility and comfort for everyday riding. Regardless of the type, it is crucial that a helmet fits properly to provide optimal protection. A well-fitting helmet should sit level on the head, covering the forehead, and the straps should be snug but comfortable.