The short answer: age and head size decide first
The Bern Nino DVRT and Bern Hudson are built for different riders, so the choice usually comes down to who will wear the helmet. The Nino DVRT is recommended for children ages 5–8 and comes in XS/S and S/M sizes with specific head circumference ranges. The Hudson is an adult helmet offered in Small, Medium and Large, though the supplied information does not list head circumference ranges for those sizes.
If you are shopping for a child in that age range, start with the Nino DVRT and confirm the head measurement against the XS/S or S/M range. If you are shopping for an adult, the Hudson is the relevant option, but you will need to check the size chart or try sizes locally because the catalog evidence does not provide circumference numbers for Small, Medium or Large.
What the catalog confirms about each helmet
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Bern® Nino DVRT Youth Helmet, Black: Recommended for children ages 5–8 years old; XS/S fits head circumference 48–51.5 cm; S/M fits 51.5–54.5 cm. These are the only published fit ranges in the supplied records, so they are the most reliable starting point for the youth helmet decision.
Bern® Nino DVRT Youth Helmet, Black
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Bern® Hudson Adult Helmet: Available in Small, Medium and Large; described as an adult helmet for micromobility. This confirms the adult sizing and intended use, but the absence of circumference ranges means you cannot pick a Hudson size from this page alone.
Bern® Hudson Adult Helmet
Feature differences that affect daily use
Both helmets are intended for riders, but the supplied details describe different priorities. The Nino DVRT emphasizes adjustable fit and rotational energy management for children, while the Hudson emphasizes style, comfort and protection for adult micromobility.
- Fit adjustment: Nino DVRT uses Compass Fit, a dial system that Bern says ensures custom fit in seconds. The Hudson record does not describe a fit dial or adjustment system, so do not assume it has one.
- Rotational energy management: Nino DVRT includes an integrated DVRT rotational energy management solution. The Hudson record does not mention DVRT or any rotational management feature, so that detail is not confirmed for the Hudson.
- Construction: Nino DVRT is engineered with lightweight, high impact-absorbing ZipMold+ technology. The Hudson record does not list its construction material in the supplied evidence.
- Visor: Nino DVRT has a soft flip visor to shield sun from children's eyes. The Hudson record does not describe a visor.
How to measure and choose the Nino DVRT size
The Nino DVRT is the only helmet here with published circumference ranges. Measure around the widest part of the child's head, just above the eyebrows and ears, then compare to the two options. XS/S covers 48–51.5 cm, and S/M covers 51.5–54.5 cm. If the measurement lands exactly at 51.5 cm, either size may fit, so use the Compass Fit dial to fine-tune comfort and check that the helmet sits level and snug before riding.
Because the Nino DVRT is recommended for ages 5–8, a child outside that age range may need a different helmet even if the circumference matches. Treat the age recommendation and the measurement as two separate checks.
What you can and cannot decide about the Hudson from this page
The Hudson comes in Small, Medium and Large, but the supplied record does not include head circumference ranges for those sizes. That means you cannot confidently choose a Hudson size from the catalog facts alone. Check the size guidance on the product page or with the retailer before ordering, and if you are between sizes, prioritize a secure, comfortable fit over a particular label.
The Hudson is described as perfect for micromobility, which suggests it is intended for adult riders using eBikes, scooters or similar transport. The record does not specify certification standards or care instructions, so those details should be confirmed separately if they matter to you.
Price and value context
At the catalog prices shown, the Nino DVRT is listed at USD 50.56 (compared with a USD 79.00 comparison price), and the Hudson is listed at USD 119.25 (compared with USD 159.00). The Hudson costs more, but the two helmets serve different riders, so price should not be the deciding factor between them. Choose the helmet that matches the rider's age and measured head size first, then weigh the features and price within that choice.
Decision guide by rider
- Child aged 5–8 with head circumference 48–54.5 cm: The Nino DVRT is the clear match. Choose XS/S for 48–51.5 cm or S/M for 51.5–54.5 cm, and use the Compass Fit dial for a secure fit.
- Adult rider: The Hudson is the intended option. Select from Small, Medium or Large after confirming the size guidance, since circumference ranges are not supplied here.
- Child outside the 5–8 age range: The Nino DVRT is not recommended by the supplied evidence for children outside that age band, even if the circumference fits. Look for a helmet explicitly intended for that age group.
- Rider who wants a visor and dial fit: Only the Nino DVRT record confirms a flip visor and Compass Fit dial. The Hudson record does not confirm either feature.