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Size Chart
If between sizes, go for M.
Size
Oval Head
Round Head
S
20.1 – 21.7
in
20.1 – 21.3
in
M
21.7 – 23.8
in
21.3 – 23.2
in
L
23.8 – 24.8
in
23.2 – 24.2
in
Helmet sizes are based on the circumference of your head. To determine the correct size, use a soft tape or string to measure around your head —
just above your eyebrows and around the widest part at the back.
Make sure the tape wraps the full circumference from front to back
Two head shapes affect helmet fit:
Oval Head
More common in occidental regions. Longer front to back and narrower side to side.
Round Head
More common in Asian regions. Similar width and length for a more balanced look.
How to measure your head
Learn how to measure your head to choose out your ideal helmet size.
Which visor is best for you?
Clear
Suited for low-light
conditions
conditions
100%
UV Protection
5
Self-aligning
Magnets
Magnets
Rest Position
Panoramic View
Tinted
Suited for sunny
conditions
conditions
100%
UV Protection
5
Self-aligning
Magnets
Magnets
Rest Position
Panoramic View
Photochromic
Suited for any
weather conditions
weather conditions
100%
UV Protection
5
Self-aligning
Magnets
Magnets
Rest Position
Panoramic View
Important information for size L
The visor cannot be stored in rest position. As a thank you for your understanding, we’re including a FREE UNIT 1 Bottle.
Pick your style
Info
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30-day easy returns
Express Shipping
1-Year Warranty
Your new AURA Mips
Buy AURA Mips
AURA is an e-bike certified smart helmet (NTA 8776) with Mips protection.
✓ E-bike certified protection: Built to the NTA 8776 standard for higher-speed riding.
✓ Mips Safety System: Helps reduce rotational forces in certain angled impacts.
✓ Virginia Tech 5-star safety rating: Independently tested and rated 5 stars
✓ Massive visibility with integrated lights: Front and rear lighting designed to make you stand out in traffic (day or night).
✓ Crash Alert SOS (active safety): Detects a hard impact and can send an SOS to an emergency contact via the UNIT 1 App if you don’t respond.
✓ Turn signals + automatic brake light: Activated via the handlebar UNIT 1 Remote, so you can signal without taking your hands off the bars.
✓ Connected smart controls: Customize and manage key features in the UNIT 1 App.
✓ Award-winning design: Recognized with iF Design Award and Red Dot Award for product design.
Color
Pick your style
Size
Accessories
Inside
the Box
UNIT 1 App Access
USB-C Charging Cable
AURA
Frequently asked questions
Yes, all our Helmets + Lights + UNIT 1 Remote are 100% waterproof.
Depending on your settings (since AURA is highly customizable), the battery can last between 3 to 12 hours of riding.
AURA is E-bike certified with NTA 8776 up to 45 km/h. Also, it is compliant with CPSC, EN1078 and AS/NZS 1698:2006. Additionally, AURA is Virginia Tech certified and has earned a 5-star safety rating, with a STAR Value Score of 9.01—ranking #14 out of 271 helmets tested.
Yes, AURA has Crash Detection. In the event of an accident, AURA can detect a hard impact and, if you fail to respond to our safety check, send out an SOS text with your location. Once a hard crash is registered by the onboard accelerometer (mild bumps won’t trigger this), a safety check timer will go off in our App. If the rider doesn’t respond, the SOS is sent to the emergency contact you have selected in the App. The safety check timer and even the SOS message are both customizable. The phone screen doesn’t have to be on for this feature to work but the App must be open (with Crash Detection active). If you need help setting this up, check this tutorial in the App section.
Mips is a security system that improves a helmet's performance during rotational impacts (which are the most usual kind). Essentially, it's a special low-friction liner that can slightly rotate in any direction at the moment of impact, absorbing some of the impact's energy. All in all, it makes the helmet safer (cause the helmet is already safe, to begin with). You can read more about Mips here!
The AURA Smart Helmet weighs just 440g without Mips. As a kicker: AURA is supper well balanced, which makes it super comfortable even for long rides.
AURA
Tech Specs
Weight
15.52 ounces (440 grams)
Medium size
Ventilation
10 Fixed Vents
2x Front/Sides
4x Top
4x Rear
E-bike Certifications
Built to meet international standards NTA8776, EN1078, and CPSC, the AURA helmet is certified safe for e-bike use, adding essential value for modern urban mobility.
Construction
Polyester: Comfort padding
Expanded Polystyrene (EPS): Impact absorption
Polycarbonate (PC): Hard shell
Splash, Water, and Dust Resistant
Rated IP67 (protected from dust and water-resistant up to 1 meter for 30 minutes) according to IEC standard 60529
Lights
Front and Rear
350 Lumens output
Battery
1350mAh with variable runtime depending on settings (1)
Solid Mode at 100% Brightness: Up to 3 hours
Beacon Mode at 100% Brightness: Up to 15 hours
Beacon Mode at 50% Brightness: Up to 30 hours
External Buttons, connectors and parts
Power Button
Charging Port
FIDLOCK® Magnetic Buckle
Magnetic Attachable Brim
Fitting System
Sensors
3-axis Accelerometer
Ambient light sensor (2)
Connectivity
Seamlessly connects to the UNIT 1 App via Bluetooth 5.0 for enhanced control and customization.
Weight
Crash Alert (3)
Customizable Lights
Weather Mode
Battery Tracking
Battery Save Mode
UNIT 1 Remote synchronization
Smart Light synchronization
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