Helmets are a must when cycling, and in some places they are required by law. All helmets must meet the same standard of impact protection, but there are a few additional things to consider when buying one. This will be especially useful for you after reading this article - https://www.feltet.dk/spil/nyheder/tips_og_ider_til_at_forbedre_din_cykling/
Here are the most important factors when choosing a cycling helmet:
First and foremost, make sure the helmet fits you: a poor fit can compromise protection (and the desire to wear a helmet), so buy the right size helmet and adjust it properly.
Look for a bike helmet that fits your riding style. Helmet categories simplify the selection process by organizing the options that best suit your needs (for example, a road helmet can be used on a dirt road, while a mountain bike helmet can still be used on a road). Bicycle helmets can be divided into three main types:
Recreational bicycle helmets.
This is an economical choice that provides basic impact protection for everyday riding.
Highway helmets.
They are designed to be lightweight, well ventilated, and aerodynamic.
Mountain bike helmets are well ventilated, and most models have a wider back of the head because a mountain biker is more likely to fall backwards than a road biker.
Think about what special features you need. Are new protection technologies and improved design (lighter, cooler, more aerodynamic) important to you? Do you need special features like a built-in mount for a flashlight or action camera? Keep in mind that all of these will increase the price of the helmet.
When choosing a bike helmet, it is very important that it fits well on your head because an ill-fitting lid can reduce your effectiveness in the event of a crash.
To find the right size for your bike helmet, start by measuring your head circumference because the size of the helmet depends on it.
To determine your head circumference, wrap a flexible measuring tape around the largest part of your head - about an inch above your eyebrows. You can also wrap a rope around your head and then measure the length of the rope with a tape measure.
Sizing options for bicycle helmets:
Very small: up to 51 cm (20 inches)
Small: 51-55 cm (20"-21.75")
Medium: 21.75"-23.25" (55cm-59cm)
Large: 23.25"-24.75" (59cm-63cm)
Extra large: over 24.75" (63cm)
The main task of a helmet is to protect the head from injuries in the event of a fall from a bicycle, and all known tests measure the helmet's effectiveness in this direction.
The protective part of the helmet consists of an outer shell and an inner liner that are integrated with each other:
The plastic helmet shell provides a certain amount of puncture resistance and allows the helmet to slide in the event of an impact (to protect the head and neck).
The helmet liner is made of polystyrene foam (mostly high quality polystyrene foam); it protects the head by braking it and dissipating the forces of impact.
We now know that rotational forces can also cause brain damage, although they are less obvious. That's why helmet manufacturers have developed a wide range of technologies - all with different names - to minimize rotational forces during a crash. If you're a frequent cyclist or just want more peace of mind, you may decide that the extra cost of the following specialized technologies is worth considering:
Mips: Found on many brands of helmets, Mips (Multi-directional Impact Protection System) technology features a low-friction layer that redirects rotational effects, allowing the cushioning foam padding to rotate slightly during impact.
WaveCel: This technology, found on some Bontrager helmets, features a honeycomb-like lining material designed to create a complex "crush zone" that absorbs both the initial impact force and rotational energy from the impact.
SPIN: The Shearing Pads Inside (SPIN) technology used in POC helmets involves silicone pads in a structure that moves within the shell to redirect rotational forces during impact.
Caring for your bike helmet.
Do not use chemical solvents to clean your helmet. Manufacturers recommend using only a soft cloth or sponge and mild soapy water. The removable pads are washable.
Do not store your helmet in an attic, garage, trunk, or other places where heat can accumulate. Excessive heat can cause bubbling on parts of the helmet. Do not use a damaged helmet.
Do not lend your helmet to others. You want to know exactly how your helmet has been used during its lifetime.
More information: https://www.motionsfeltet.dk/andet/bliv_klogere_paa_fordelene_ved_at_cykle/