How to Get the Perfect Bike Helmet Fit

How to Choose the Right Lazer Helmet Size and Fit

Choosing the right bike helmet size starts with measuring your head, checking the size chart for the specific helmet, and then trying the helmet on to confirm that it sits securely without uncomfortable pressure points.

A properly fitted helmet should feel snug, stay in place when you move your head, sit level rather than tilted back, and allow the straps and retention system to adjust comfortably around your head.

Different riding styles call for different helmet designs. Road, mountain bike, urban, and kids' helmets may vary in coverage, shape, ventilation, and features, but they all need to fit correctly to stay securely positioned while you ride.

How Do You Measure Your Head for a Bike Helmet?

Before shopping online or visiting your local bike shop, measure the circumference of your head so you know which helmet sizes to consider.

Use a flexible tailor's tape and wrap it around the widest part of your head, approximately 2.5 cm, or about 1 inch, above your eyebrows.

Keep the tape level and snug without pulling it tightly into your skin.

If you don't have a flexible measuring tape, use a piece of string, shoelace, or twine. Wrap it around your head, mark the point where the ends meet, and then measure that length with a ruler or standard tape measure.

How Do You Use the Lazer Helmet Size Chart?

Once you know your head circumference, compare your measurement with the sizing information for the helmet you're considering.

Lazer adult helmets are available in multiple size ranges, and sizing can vary by model. Always check the specific product's measurements rather than assuming that every Lazer helmet uses exactly the same size range.

You can also review the Lazer Helmet Size Chart before choosing your helmet.

Lazer also offers kids' helmets designed for smaller head circumferences, including select models that fit heads as small as 46 cm.

How Should a Bike Helmet Feel When You First Put It On?

Once you have the helmet in hand, fully open the retention system before placing the helmet on your head.

With the fit system open, the helmet should sit comfortably around your head without creating obvious pressure points along the front, sides, or back.

The helmet should also sit level rather than tilting far backward or dropping excessively over your eyes.

How Tight Should the Helmet Retention System Be?

Once the helmet is positioned correctly, tighten the adjustable head basket using the retention control on your helmet.

Depending on the model, the adjustment may be positioned on the top or rear of the helmet and may use a system such as Advanced Rollsys or TurnSys.

Tighten the system until the helmet feels snug and stable. You should feel even contact around your head, but you should not experience uncomfortable pressure points.

The retention system is designed to fine-tune the fit. If you need to tighten it to its maximum setting just to keep the helmet in place, the helmet may be too large.

What Is the Bike Helmet Shake Test?

The shake test is a simple way to check whether the helmet is stable before fastening the chin strap.

With the retention system adjusted and the straps still unbuckled, gently move your head from side to side, then up and down.

The helmet should remain securely positioned and should not slide freely around your head.

If the helmet moves excessively, tighten the retention system slightly and repeat the test. If it still moves after proper adjustment, consider trying a smaller size or a different helmet model.

How Much Coverage Should a Bike Helmet Provide?

Helmet coverage varies depending on the type of riding the helmet is designed for.

Road helmets generally use a more streamlined profile, while mountain bike helmets often extend farther down the back and sides of the head.

Urban and recreational helmets can use different shapes again, depending on the intended riding position and features.

Coverage differences do not necessarily mean you need a different numerical size. The goal is to find the correct size first, then choose the helmet style and coverage that best match how you ride.

How Should a Bike Helmet Chin Strap Fit?

Once the helmet shell and retention system fit correctly, adjust the straps and buckle.

Position the side strap adjusters so the straps sit comfortably around your ears without rubbing or twisting.

Fasten the chin buckle and tighten the strap until it feels secure while still allowing you to comfortably open your mouth.

The strap should not hang loosely below your chin, and the helmet should remain securely positioned when you move your head.

How Do You Know If a Bike Helmet Is Too Big?

A helmet may be too large if it slides noticeably even after the retention system is adjusted, shifts excessively during the shake test, or requires the fit system to be tightened to its limit.

If that happens, try the next size down or another model with a shape that better matches your head.

How Do You Know If a Bike Helmet Is Too Small?

A helmet may be too small if it creates uncomfortable pressure points before the retention system is tightened, does not sit fully on your head, or feels excessively tight around the temples or forehead.

A properly fitted helmet should feel secure, not painful.

What If Your Lazer Helmet Doesn't Fit?

If you're shopping at a bike shop, try the next size up or down and compare the fit. Staff at an authorized retailer can also help determine whether a different helmet shape or model is a better match.

If you ordered your helmet online, Lazer offers 60-Day Free Returns on qualifying purchases.

This gives you an opportunity to make sure the helmet size, shape, and fit work for you before settling on your final choice.

Quick Lazer Helmet Fit Checklist

Taking a few extra minutes to measure, try on, and adjust your helmet can make a noticeable difference in comfort and stability. Start with the right size, fine-tune the retention system and straps, and make sure the helmet stays securely positioned before heading out for your next ride.