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How To Size A Motorcycle Helmet

how to size a helmet

Did you know that the relative size and level of comfort your helmet provides could impact your performance as a motorist? When you are behind the wheel of a motorcycle, you travel at astronomical speeds. For this reason, it is always important that you know how to size a helmet to optimize your blood flow, to remain alert, and to maintain visual acuity and a clear plane of vision.

If you find yourself in a motorcycle shop, here is the quickest way to find out if the helmet is the right size for your head-


A motorcycle helmet that offers an improper fit can actually tremble as you are driving, affecting your capacity to see clearly. When you are driving at high speeds down the road, optimal attention is key, and it is impossible to fully direct your attention to the road when, you are distracted by a bad fitting helmet. The more comfortable you are, the more easily you can allocate your attention to safe driving.

Motorcycle Helmet Sizing Chart

How To Size A Motorcycle Helmet

Finding the right helmet size is essential to motorcycle safety. When a helmet fits snugly around your head, it offers maximum comfort and security, and it remains firmly secured on your head during maneuvers, sharp turns, and crashes, as well. If a motorcycle helmet fits too loosely, it will essentially slip of, leaving you susceptible to serious injury during collision. And of course, if a helmet fits far too snugly around your head, it will minimize facial blood flow and prove to be very uncomfortable.

The first step to properly sizing a motorcycle helmet entails properly measuring your own head. Although there is a such thing as an average head size, some heads measure slightly smaller or larger than others. Shapes happen to vary in shape and sizes, so it is essential that you measure your head, as some manufacturers may not offer your size.

Measuring your head is much easier than you think. The first step to doing this is to simply retrieve your tape measure, preferably using a cloth tape measure that can bend around the angles of your head. In order to determine the circumference of your head, you must do so one inch above your eyebrow.

Furthermore, it is critical to measure your head more than once, and to average out the measurements you obtained. Once you have measured your head in inches or centimeters, refer to a chart with corresponding motorcycle helmet sizes. Furthermore, different helmet size lists correspond to different sizing options. For example, there are helmets reserved specifically for every day motorcycling, high speed motorcycle, auto racing, and a variety of other high paced activities.

Always ensure that the material that composes your motorcycle helmet comprises a comfortable helmet liner. If it feels too loose or too tight, you may need to resize. Helmets that are inadequately designed may budge into your head, causing pain or irritation. The padding must be distributed equally around your head for optimal comfort. Furthermore, the chin strap should offer enough space but fit snugly as well. Pressure points are generally distributed throughout the face, head and neck.

So, anything that presses excessively against a pressure point will prove to be uncomfortable. If a helmet feels uncomfortable at first, do not immediately exchange it for a larger size. Many helmets have adjustment options, enabling you to customize them to your individual head size and shape, as well.

How To Size A Motorcycle Helmet Video

If you are looking to buy a helmet online, here is the best way to size the right helmet for your head-

Helmet Sizing Guidelines

Here are just a few sizing estimates that correspond to motorcycle helmets.

A size extra small is best suited to a head circumference of approximately 20 inches to 21 inches. A size small helmet corresponds to a head circumference of 21. 5 to 22 inches.

A medium sized head will range between 22.3 and 22.75 inches.

A large motorcycle helmet size will run between 23. 25 inches and 23. inches.

An XL head will range between 24 inches and 24.2 inches. An XXL helmet size will run between 24.75 inches and 25.25 inches.

Male and female sizes may differ, somewhat. However, there are motorcycle helmet manufacturers that offer universal sizing options. Head size is not the only consideration that you must make when sizing your helmet. Face size, shape and width must also be noted. For example, a rounded, square or heart shaped face would require a shorter chin strap, while an oblong or oval face would require a more lengthy chinstrap. Those with wide or rounded faces may need a much wider helmet thn those with narrow faces. And furthermore, an individual with a significantly wider jaw than the average person will require more space. Therefore, consider both your head size and your face size when purchasing the right helmet.

There are a few key considerations that must be made as you are sizing your head. The relative bulk, thickness or length of your hair should be considered, as it will impact the manner in which your motorcycle helmet fits. Furthermore, you may find it beneficial to try on a helmet in person, instead of simply ordering one online.

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