JUST1 J-STR Helmet – Astro Red / Blue / Black Gloss
Dynamic graphic design meets modern safety
With the JUST1 J-STR Astro, you get a strikingly designed full-face helmet that combines sportiness, comfort, and high-quality safety standards. The glossy Red/Blue/Black graphic makes it a real eye-catcher – perfect for sporty street and naked bike riders.
The helmet impresses both in everyday use and on longer tours with its lightweight feel and reliable construction according to ECE 22.06.
🛡 SAFETY – developed according to the latest standards
The Astro utilizes the advanced safety platform of the J-STR series:
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ABS outer shell in 2 shell sizes
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EPS inner shell in 2 sizes
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ECE 22.06 certified
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DOT certified
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J.I.E.R. Emergency Cheek Pads Removal System
→ quick & safe helmet removal in case of emergency -
robust double-D closure
An ideal helmet for sporty riders who do not want to compromise on the latest standards.
😌 COMFORT – breathable interior
An advanced inner lining ensures a pleasant helmet climate:
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Protx2™ antimicrobial treatment
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removable & washable
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comfortable cheek pads for a stable fit
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efficient ventilation for optimal air circulation
Even on longer distances, the J-STR remains pleasantly fresh and stable.
👁 VISOR – wide view & anti-fog prepared
Thanks to its modern visor design, you enjoy a very wide field of vision:
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Wide Vision Visor
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scratch-resistant & clear
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Pinlock 70 prepared (Pinlock insert optional)
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including Nose Cover
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practical helmet bag
Excellent visibility – whether in city traffic, on country roads, or during sporty riding.
🎁 SCOPE OF DELIVERY
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JUST1 J-STR Astro Red/Blue/Black
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Nose Cover
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Helmet Bag
📏 Adult Size Chart
| Size | Head Circumference (cm) | Inch |
|---|---|---|
| XS | 53–54 | 20.9 – 21.3 |
| S | 55–56 | 21.7 – 22.1 |
| M | 57–58 | 22.4 – 22.8 |
| L | 59–60 | 23.2 – 23.6 |
| XL | 61–62 | 24.0 – 24.4 |
| XXL | 63 | 24.8 – 25.2 |
🧭 This is how to measure the correct helmet size
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Place the measuring tape just above the eyebrows
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Measure the circumference at the widest point of the head
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Measure multiple times for accurate values
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The helmet should fit snugly but not uncomfortably
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If the helmet moves while wearing it → choose one size smaller
🚀 CONCLUSION
The JUST1 J-STR Astro is a sporty, stylish full-face helmet focused on safety, comfort, and strong aesthetics. Ideal for riders who want to combine modern, vibrant design with proven technology.
