Smith Bike Persist 2 Mips Helmet. Fast-Paced Lunch Ride Or Weekend 60-Miler, The Smith Persist Road Helmet Is Down For Whatever You´ve Got In Mind. Designed To Feel Like It´s Tailor-Made For Your Head, You Can Fine Tune The Fit On The Fly With An Easy To Use Dial Adjuster. When You´re Sweating It Out On The Climb, 21 Fixed Vents And Our Airevac™ Ventilation System Keep The Air Flowing, Your Head Cool And Your Glasses From Fogging. Energy Absorbing Zonal Koroyd® Complements Mips® Brain Protection System To Reduce Impact Forces In The Event Of A Crash And For The Confidence To Tuck Every Descent.Features:Protection: - Lightweight In-Mold Construction, Zonal Koroyd® Coverage For Lightweight, Energy-Absorbing And Ventilated Impact Protection- Mips® Brain Protection System Reduces Rotational Forces Caused By Angled Impacts To The Head- Cpsc And Ce En 1078 CertifiedFit / Integration: - Adjustable Dial Fit System For A Customized Fit- Designed For Ultimate Integration With Smith Performance Eyewear For Maximum Comfort, Venting And Storage Convenience- Airevac™ Ventilation System Integrates With Smith Eyewear For Fog-Free Lenses- 21 Fixed Vents For Consistent Airflow- Performance Comfort Lining- Lightweight, Low-Bulk Single Layer WebbingSpecifications:- Weight: 11 Oz / 300 G. tradeinn Bikeinn