Handcrafted full-face helmet with distinctive design and detailing
Choosing the right size is one of the most important parts of buying a motorcycle helmet. Use the guide below to measure your head and compare your measurement with the appropriate Hedon size chart.
Measure around the widest part of your head, approximately 2cm above your eyebrows, passing just above your ears and around the back of your head.
Use a soft tape measure and record the measurement in centimetres.

If you're between sizes or unsure which helmet is right for you, we're always happy to help.
Your head shape can affect how a helmet fits, even when the circumference measurement is correct.
Hedon helmet models suit slightly different head shapes, so use the illustration below alongside the individual size charts.

Best suited to riders with a slightly longer, oval head shape.
| Size | Head Circumference |
|---|---|
| S | 54–55 cm |
| M | 56–57 cm |
| L | 58–59 cm |
| XL | 60–61 cm |
| XXL | 62 cm |
| XXXL | 63–64 cm |
Adventure touring helmet sizing for the Hedon Psilo Explorer range.
| Size | Head Circumference |
|---|---|
| S | 53–54 cm |
| M | 55–56 cm |
| L | 57–58 cm |
| XL | 59–60 cm |
| XXL | 61–62 cm |
| XXXL | 63–64 cm |
Best suited to riders with a slightly rounder head shape.
| Size | Head Circumference |
|---|---|
| XS | 52–53 cm |
| S | 54–55 cm |
| M | 56–57 cm |
| L | 58–59 cm |
| XL | 60–61 cm |
| XXL | 62 cm |
Pop into our Guildford store and we'll help you find the Hedon helmet that suits your head shape, check the fit, explain the differences between the models, and make sure you leave with a helmet that's comfortable, secure and gives you confidence every time you ride.
Whether you're buying your first premium helmet or replacing an old favourite, we're always happy to offer honest, rider-to-rider advice.
Independent Motorcycle Shop • Official Hedon Retailer • Helmet Fitting • Guildford, Surrey
Inspired by the elegant Porsche 911 Macadamia, the Hedon Heroine Racer 2.0 Macadamia combines classic British styling with modern motorcycle helmet technology.
Built for riders who appreciate understated design as much as performance, the Heroine Racer 2.0 features a lightweight composite shell, premium leather trim and Hedon's beautifully finished automotive-grade metallic paint.
Behind the timeless looks is a thoroughly modern helmet that meets the latest ECE 22.06 safety standard while remaining exceptionally comfortable for everyday riding.
The redesigned Heroine Racer 2.0 introduces an upgraded shell construction that reduces weight, a new four-position visor mechanism for improved airflow and comfort, and redesigned CNC hardware for an even more refined finish.
Handcrafted in London with meticulous attention to detail, the Heroine Racer 2.0 delivers the character of a retro full-face helmet without compromising modern comfort or protection.
The Heroine Racer 2.0 combines handcrafted British design with modern helmet technology. Its lightweight shell, refined aerodynamics and impressive acoustic performance make it exceptionally comfortable over longer rides, while the premium finish and ECE 22.06 certification mean it performs just as well as it looks.
Need to exchange for a different size or send something back? Our online Returns Portal makes the process quick and straightforward.
Need advice choosing the right gear, checking compatibility or finding the right size? Visit our Help Centre for answers to common questions, or get in touch if you’d prefer to speak to us.