How to Find My Riding Helmet Size?
Updated: June 2026 · Rincón del Valle Team
How do I know my riding helmet size?
To find your size, measure the circumference of your head with a soft measuring tape, placing it approximately 1 cm above your eyebrows and over your ears, keeping the tape parallel to the ground. The measurement in centimeters corresponds directly to the helmet size (54 cm = size 54, 56 cm = size 56, etc.). Once you know your size, you can view all the riding helmets in the store.
How to measure
Use a soft (sewing) measuring tape, 1 cm above the eyebrows and ears, parallel to the ground. Repeat the measurement 2-3 times and take the largest one.
Typical size
Adults are usually between 54 and 60 cm. Children 47-55 cm. Larger heads (size XL) usually range from 60 to 63 cm in brands like Casco or Charles Owen.
If you are between sizes
Choose the larger one: it can always be adjusted with extra pads. A size that is too small cannot be expanded.
Related resources
Expanded information
When to replace
The helmet must be replaced after a fall with impact, even if it looks intact: the inner foam deforms without external signs. Also, replace it if it is more than 5 years past manufacture, feels loose due to padding wear, or shows cracks and deterioration of the lining. Storing it in a cool place inside a breathable bag extends its aesthetic lifespan.
Maintenance and cleaning
The interior can be cleaned with mild soap if the lining is removable. Wipe the exterior with a soft, damp cloth. Do not use solvents or alcohols that may damage the paint. Do not leave it exposed to the sun in a car during summer: heat irreversibly degrades the internal shock-absorbing material.
Frequently asked questions
How long does a riding helmet last?
With normal use and no falls, between 3 and 5 years. After an impact-related fall, it must always be replaced.
Can I use a borrowed helmet?
Only if you know its history (no prior falls) and the size fits your head circumference. When in doubt, it is better to use your own.
Do I need a different helmet for each discipline?
It is not mandatory, but dressage values a sober aesthetic while jumping allows for more variety. What is non-negotiable is the safety certification.
Riding helmet size chart
Measure the circumference of your head with a soft measuring tape, 1 cm above the eyebrows and over the ears, parallel to the ground. The measurement in centimeters is directly your size.
| Head circumference (cm) | Numeric size | Letter size |
|---|---|---|
| 51 – 52 | 52 | XS |
| 53 – 54 | 54 | S |
| 55 – 56 | 56 | M |
| 57 – 58 | 58 | L |
| 59 – 60 | 60 | XL |
| 61 – 62 | 62 | XXL |
If your measurement falls between two sizes, choose the larger one and adjust with the dial/pads. Brands like Kask use size = exact cm; check the available sizes for each model.
