How to Size a Danmar Helmet

A properly fitting helmet is essential for both comfort and protection. Too loose and it won’t do its job; too tight and it won’t be worn. Whether you’re ordering a Danmar helmet for the first time or replacing one that has been outgrown or worn out, this guide walks you through everything you need to get the sizing right.

Periodically checking the fit and inspecting the condition of an existing helmet is also important. If the foam has compressed, the shell is cracked, or the fit has changed, it may be time to reorder.

The Three Basic Measurements

Stocked Danmar helmets — both soft shell and hard shell — are sized using three measurements. Take all three with a flexible measuring tape, ideally with a second person assisting for accuracy.

(A) Circumference — Place the measuring tape just above eyebrow level and wrap it around the widest part of the head, keeping it straight as it comes around to the front. Round up to the nearest 1/8 inch.

(B) Occipital — Place the measuring tape between and slightly above the eyebrows, then bring it over the top of the head to the base of the skull (the bump at the back of the head). Add 1 inch to your measurement. Keep the tape close to the end of the hairline to avoid going too short or too long.

(C) Ear to Ear — Place the measuring tape just above the top of one ear, bring it over the head to the top of the other ear, and pull it slightly snug. A measurement that is too loose can result in a helmet that doesn’t stay in place — keep it snug.

Pro Tip: Always have a second person assist with measurements. It is very difficult to hold the tape in position accurately on your own, especially for the occipital and ear-to-ear measurements. A few millimeters of error can push you into the wrong size.

Finding Your Size

Once you have all three measurements, match them to the Danmar sizing chart for the specific helmet style you are ordering. Note that sizing charts vary by helmet model, so always use the chart that corresponds to your chosen style.

The circumference measurement is the most important of the three. If the other measurements fall within a size up or down of the circumference result, go with the circumference. If all three measurements are pointing in different directions, a custom helmet is likely the better path.

Two sizes — XX-Small and XX-Large — are special order items and have extended lead times. Plan ahead if either of these sizes applies.

What if the Measurements Don’t Match a Standard Size?

If measurements fall between sizes or outside the standard range, a custom-made Danmar helmet is available. Custom helmets can also be ordered when additional features are needed, such as a faceguard, ear coverings, or a specialized strapping system.

For instructions on taking the additional measurements required for a custom helmet, see our article on fitting a custom-made Danmar helmet.

Know a therapist, caregiver, or school nurse who orders Danmar helmets? Share this guide — accurate sizing makes all the difference.

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