Adjustable Cycling Helmet for Men & Women with Koroyd Coverage and MIPS Technology

Smith, originating from Sun Valley, Idaho, was founded in 1965 with the invention of the first snow goggle featuring a sealed thermal lens and breathable vent foam. With 50 years of innovation and design experience, Smith is widely recognized today as an industry leader that pioneers advanced eyewear and helmets, incorporating dynamic technologies, optimized performance, and clean styling to fuel fun beyond walls. Smith seeks to empower thrilling experiences in snow, surf, bike, fish, and peak performance outdoor adventures with a comprehensive collection that exudes modern style and vibrant personality. To Smith, the experience is everything.

The Smith Mainline is the brand's pinnacle, downhill certified enduro bike helmet. Safety innovations like Koroyd and MIPS provide energy-absorbing impact protection, giving you the confidence to push the limits on the trail. Whether you're conquering the EWS in Whistler or enduring the last stage of your local enduro race, you need a breathable, lightweight helmet that seamlessly integrates with your goggles and fits like a glove.

The Mainline's lightweight in-mold construction, MIPS Protection System, and adjustable dial fit ensure a secure and customizable experience. The AirEvac ventilation system works in harmony with your Smith goggles to provide fog-free vision, while the adjustable visor and three washable cheek pad kits allow you to fine-tune the fit.

The Koroyd technology is the backbone of the Mainline's engineered absorption and protection. This precise and unique thermal welding process creates a structure with extremely efficient and consistent energy absorption properties. Upon impact, the Koroyd cores crush in a controlled manner, decelerating the energy and reducing the final trauma levels.

Thousands of co-polymer extruded tubes, thermally welded to create an unparalleled consistent and fully engineered core, make up the Koroyd sections. Each section is engineered to precise durometer, size, and thickness specifications to provide the greatest impact resistance and aesthetically consistent presentation.

Koroyd's open-cell construction allows cool air in and expels hot air from the rider's head, providing full breathability without compromising impact performance. The completely open-cell construction integrates with internal channels to create the full Aerocore construction, delivering ventilated protection.

In summary, the Smith Mainline is a pinnacle enduro bike helmet that combines safety, comfort, and style. With Koroyd and MIPS technologies, a customizable fit, and seamless integration with Smith goggles, this helmet is designed to empower you to conquer the trails with confidence and comfort.

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