The measured head circumference decides the size, not the S/M/L label · review
A size L helmet for 58–61 cm (22.8 to 24 in) heads with six rear LEDs in three modes, a removable visor and a dial adjuster, supplied with the CR1620 cell already fitted.
Our conclusion A well-equipped helmet for larger heads. Check the 58–61 cm (22.8 to 24 in) range against your own measurement, because this reference is that size only.
Dunlop’s adult helmet packs in the features usually found a price step higher, with one important constraint.
Six LEDs in three modes — steady, slow flash, fast flash. Head circumference 58–61 cm (22.8 to 24 in), adjusted with a red dial. A removable visor for sun, wind, rain and dirt. Low weight with large ventilation openings, though no figure is given for either. A CR1620 cell supplied fitted.
This reference is the L size. At 58–61 cm (22.8 to 24 in) it covers larger heads and nothing else, which is a genuinely useful thing when many helmets stop at 59 cm (23.2 in) — and a problem if you are 56 cm (22 in). Measure before ordering; that measurement is the specification, not the letter.
Worth a moment: rules on flashing lights differ by country, and some jurisdictions restrict flashing rear lamps on the road. A helmet light is usually treated separately from a bike lamp, but if you ride where the rules are specific, check them from the authority that publishes them rather than assuming.
Weight and vent count. On a helmet with a visor and integrated lighting, both are worth knowing — the visor and the light add mass, and vents are what make a helmet bearable on a warm climb. Where a manufacturer publishes nothing, we say so rather than estimating.
A listing is not an offer: the reference exists on these stores, availability changes daily.
| Stated head circumference | 58–61 cm (22.8 to 24 in) (sold as L) |
|---|---|
| Lighting | 6 LEDs, 3 modes, CR1620 cell supplied |
| Visor | Removable |
| Amazon reference | B0BGLNM2F6 (identical on 5 markets) |
| EAN | 8711252267562 |
Yes. Dunlop supplies it as removable, so the helmet works with the visor for sun, wind and rain, and without it for a plainer town look.
A CR1620 cell, which the manufacturer states is supplied fitted so no tools or extra purchases are needed to use the lights.
7.8/ 10
A well-equipped helmet for larger heads. Check the 58–61 cm (22.8 to 24 in) range against your own measurement, because this reference is that size only.
Riders with a larger head who want lighting and a visor without moving up in price.
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
56–59 cm (22 to 23.2 in) · height-adjustable cradle · Multi-Fit light
A touring helmet from an established German sports brand, with a height-adjustable retention cradle, insect mesh in the front vents and a high-mounted integrated light.
Best for: Longer rides where a cradle that adjusts in two axes makes the difference over several hours.
M 54–58, L 58–61, XL 61–63 cm (24 to 24.8 in) · CPSC, ASTM F1447, CE · 18 vents · big visor
A mountain bike helmet in three published size bands, with eighteen channelled vents, a polycarbonate shell fused to EPS and three declared markings.
Best for: A trail rider with a measured head between 54 and 63 cm (24.8 in) who wants the standard named
Adult MTB · PVC, PC and EPS · large lifting visor · one-hand dial
An adult mountain bike helmet in PVC, polycarbonate and EPS, with a large sun visor that moves upward and a one-handed dial.
Best for: A rider who wants a visor that flips up, and will ask the seller for the size
