Helmet Size Guide for Different Head Shapes

Finding the right helmet size is essential for safety and comfort, but it’s not just about the measurement—head shape plays a significant role in getting the ideal fit.

Different helmets are designed for different head shapes, including round, oval, and intermediate oval profiles.

This guide will help you identify your head shape and find a helmet that fits securely and comfortably.

1. Why Head Shape Matters in Helmet Sizing

Most people think only about head circumference when choosing a helmet, but head shape is just as important. A helmet that matches your head shape will:

• Reduce Pressure Points: Helmets designed for your head shape prevent uncomfortable tight spots.
• Improve Stability: A helmet that fits well won’t slide or move on impact, providing better protection.
• Enhance Comfort: Helmets that match your head shape are easier to wear for long periods.

2. Identifying Your Head Shape

To determine your head shape, follow these steps:

• Use a Mirror: Stand in front of a mirror and observe the overall shape of your head from the front and top.
• Measure Head Width and Length: Measure the distance from your forehead to the back of your head (length) and the distance from one side to the other (width).
• Compare Proportions: Use these proportions to identify your head shape:
  • Round: Width and length are nearly equal.
  • Oval: Length is noticeably greater than width.
  • Intermediate Oval: Width is slightly narrower than length (the most common shape).

3. Helmet Size Chart and Shape Recommendations

After measuring your head, use the following size chart as a general guideline, but also choose a helmet shape that aligns with your profile:

These recommendations may vary by brand, as some brands cater more specifically to different head shapes.

4. Choosing the Right Helmet Based on Your Head Shape

Here’s a closer look at helmet styles suited to different head shapes:

• Round Head Shape:
  Those with a round head shape should choose a helmet designed to fit evenly across the head without creating pressure points at the front or back. Round-shaped helmets are less common but are available in select brands, particularly in skate and snow sports helmets.
• Intermediate Oval Head Shape:
  This shape is the most common, and most helmets are designed with an intermediate oval fit. These helmets are slightly longer from front to back than from side to side, accommodating a range of head shapes comfortably. If you have an intermediate oval head shape, you should have the widest selection of helmets.
• Long Oval Head Shape:
  Long oval head shapes require helmets that are significantly longer front-to-back than side-to-side. These helmets offer space for a longer head profile, helping to avoid tightness around the temples or sides of the head. Some brands that offer motorcycle helmets, for instance, provide more options for long oval heads.

5. Trying On Helmets for Fit and Shape

Once you have a general idea of your size and shape, it’s essential to try on a few helmets to confirm the fit. Here’s what to check for each head shape:

• Round
  When trying on a round helmet, make sure it touches all parts of your head evenly. If you feel pressure on the front or back, it may be too oval for your shape.
• Intermediate Oval
  Check that the helmet sits snugly without excess pressure on the sides. An intermediate oval helmet should feel comfortable around your forehead and the back of your head.
• Long Oval
  Long oval helmets should fit closely along the length of your head without squeezing the sides. If you feel pressure on your temples, try a more oval-shaped model.

6. Helmet Fit Features for Comfort and Customization

Many helmets come with adjustable features that allow you to fine-tune the fit, especially if you’re between sizes or have a specific head shape. Look for these features:

• Dial-Fit Systems
  A dial at the back lets you adjust the tightness, making it easier to achieve a snug fit for any head shape. This feature is especially helpful if you need a slightly customized fit.
• Removable Padding
  Helmets with removable padding give you the flexibility to add or remove inserts for comfort. This is especially useful for people with less common head shapes.
• Slide Adjusters
  These help customize the helmet fit around your ears and sides, providing extra comfort for long or oval heads.

7. Common Helmet Fit Mistakes and How to Avoid Them

Avoid these common mistakes to ensure a safe, comfortable fit:

• Not Considering Head Shape: Only focusing on circumference can lead to discomfort if the helmet shape isn’t right.
• Overlooking the Fit System: Adjustable features like dials and pads can improve fit, so make use of them when available.
• Skipping the Shake Test: After adjusting, shake your head gently to see if the helmet shifts. Any movement means the fit isn’t secure.

8. When to Replace Your Helmet

No matter how well your helmet fits, it should be replaced every 3–5 years or immediately after any impact. Materials degrade over time, and a new helmet ensures ongoing safety and protection.

Final Thoughts

Getting the right helmet size and shape is essential for both comfort and safety. By identifying your head shape, measuring accurately, and trying on different styles, you can find a helmet that provides the best fit for your head.

A well-fitting helmet gives you peace of mind so you can focus on the ride, run, or adventure ahead!