Ckorison Mountain Bike Helmet, MTB Helmet Adult Lightweight Breathable Adjustable Mens Safety Certified EN1078 Cycling & Road Bicycle Helmets for Men Women

【CPSC Certified Protection】Reinforced PC shell with multi-density EPS foam absorbs 30%+ impact energy compared to standard helmets, rigorously tested for mountain biking and road cycling safety. 【21 Ultra-Airflow Channels Comfortable Ventilation】15% more vents than average helmets (vs 18 vents in similar models), combined with sweat-wicking pads and optimized airflow design to reduce 30% heat buildup during intense climbs, tested by UK mountain bikers. 【Compact Sun Visor 】Engineered to reduce 85% frontal glare (tested under variable light conditions) while maintaining 360° ventilation, the adjustable visor blocks sun, leaves, and debris without compromising airflow, ensuring clear vision on mountain trails and busy roads. 【One-Hand Precision Dial & Dual-Size Fit】Features a micro-adjustable retention system (56-61cm/22.05-24.01inch) that is 50% faster than traditional designs, combined with ergonomic padding and 3D internal slots for a secure, customized fit on all head shapes. Tested by UK mountain bikers for comfort and stability during intense rides. 【Lightweight Bike Helmet】Our cycle helmet weighs just 300 grams/0.66 lbs, the helmet is lightweight and comfortable to wear for long periods without putting strain on the rider's head and neck,which makes the cycling experience more comfortable.