Karben Sonic Alessa Crystal Top Wide Brim Riding Helmet
Overview
Key Features
Key Features
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Wide BrimWide Brim
Wider than traditional helmet visors, the front and outward extension protects riders from sun damage and reduces glare. Size may vary by brand or helmet style.
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Dial AdjustabilityDial Adjustability
Featuring an adjustable dial at the back of the helmet, these can either be tightened or loosened to correct minor helmet fitting issues and create the perfect fit.
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Removable LinerRemovable Liner
These helmets have liners that can be removed for easy cleaning or to adjust fit.
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Customizable OptionsCustomizable Options
These helmets allow you to personalize your helmet with front, back, or top inserts in numerous colors and patterns that show off your individual style.
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Round ShapeRound Shape
These helmets are the most comfortable option for riders with a rounder-shaped head. Click here to determine your head shape.
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Oval ShapeOval Shape
Riders with an oval-shaped head will feel most comfortable in these helmets. Click here to determine your head shape.
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Universal ShapeUniversal Shape
These helmets can fit any head shape through changing of liners, dial adjustability, or various shell sizes so you can find the right fit for your head's size and shape.
Safety Measures
Safety Measures
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ASTM/SEI CertifiedASTM/SEI Certified
The American Society for Testing and Materials (ASTM) writes widely known safety standards, then an independent testing laboratory called the Safety Equipment Institute (SEI) ensures that manufacturers design helmets that are up to par. The ASTM/SEI testing standard requires impact and retention tests, as well as a visor test to make sure that the visor breaks away or flexes without injuring the face.
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European CertifiedEuropean Certified
European standards are put together by a committee comprised of representatives from countries in the EU. In addition to impact, retention, and visor tests, these safety standards demand that helmets withstand penetration and crushing. The inclusion of the latter two tests is thought to produce safer helmets than those only certified to ASTM standards by SEI.
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SNELL CertifiedSNELL Certified
The Snell Foundation uses what is considered the most demanding testing procedure for riding helmets. Their tests include all aspects of the other certifications but with more stringent standards. Snell drops the helmets from a greater height during the impact test onto a variety of differently-shaped anvils, has the highest crush resistance rating, and ensures the helmet offers sufficient head coverage without sacrificing the rider's field of vision.
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MIPSMIPS
MIPS, or Multi-Directional Impact Protection System, is an additional layer embedded in some helmets to reduce strain on the brain upon a fall. When the helmet makes contact with a surface, the low-friction MIPS layer allows the head to move 10 to 15 mm in all directions to dissipate impact on the brain.
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ERT FoamERT Foam
ERT, or Energy Reduction Technology, consists of soft polymer pads incorporated into the helmet design that mitigates rotational and linear impact. With the motto "Softer is Safer", ERT works immediately and is most effective with lower-impact falls.
The Karben Sonic Alessa Crystal Top Wide Brim Riding Helmet delivers the same sophistication and advanced protection as its traditional-brim counterpart—now with added sun coverage and elegant style. Crafted from high-quality, lightweight materials, it's designed for lasting comfort during long hours in the saddle.
A TriVent Sonic Air Passive System paired with a CoolDry headband helps keep you cool year-round, while the thermoregulating 3D mesh liner retains warmth in colder weather and releases heat during warmer rides.
Designed for a secure, personalized fit, the dial-fit system allows precise adjustments so the helmet's safety features can perform at their best. A low-profile silhouette and fully adjustable 4-point harness create a sleek, streamlined look, while the removable, washable liner and chin guard make it easy to keep your helmet fresh and clean.
Details
- Flexible, Wide Brim Option
- Fun Sparkle Top
- Budget-Friendly Price Point
- Smooth Outer Shell
- TriVent Sonic Air Passive System
- Dial Fit System
- Low Profile Shape
- Lightweight Outer Shell
- Thermoregulating 3D Mesh Liner
- CoolDry Headband
- Expanded Polystyrene Inner Shell
- Fully Adjustable 4-Point Harness
- Quick Release Harness Buckle
- Removable Chin Guard
Additional Information
Accident Replacement Policy:
Karben offers a 3-year replacement policy if your helmet is in an accident.
- Accidents within 12 months of purchase date: 50% off the current retail price.
- Accidents within 24 - 36 months of purchase date: 25% off the current retail price.
Sizing
| Helmet Size | Head Circumference |
|---|---|
| XS | 49 cm - 51 cm |
| SM | 52 cm - 54 cm |
| MD | 55 cm - 57 cm |
| LG | 58 cm - 60 cm |
| XL | 61 cm - 63 cm |