ROCKBROS LK-66 Lightweight Adult Cycling Helmet
ROCKBROS LK-66 Lightweight Adult Cycling Helmet
Helmet fit & safety
- Head size: L: 58–62 cm (22.8–24.4 in). Rear dial adjustment.
- Construction: PC shell with integrated EPS foam; approximately 240 g.
- Supplier-reported standards: CE and GB, as listed by the supplier.
How to measure and check fit
Measure around the widest part of your head, just above your eyebrows. Compare that measurement with the size range for your chosen option.
Wear the helmet level and low on your forehead. Adjust the straps for a snug fit and follow the manufacturer’s fitting instructions. Choose a helmet that fits now.
Shipping calculated at checkout. Items from different brand partners may arrive separately.
Local to Fayetteville? Contact us before ordering to confirm pickup availability and timing.
Ride Light. Ride Safe. Ride Fresh.
Designed for everyday cycling and long rides alike, the LK-66 Lightweight Helmet combines advanced protection, superior ventilation, and antibacterial comfort — so you can focus on the ride, not the weight on your head.
Lightweight Protection You Can Trust
Built with a PC shell + integrated EPS foam structure, the helmet effectively absorbs and disperses impact energy, reducing direct force to the head in the event of a collision.
Certified to EU CE and GB safety standards, it delivers reliable protection backed by professional testing.
Only About 240g — Barely There
Weighing approximately 240g, the LK-66 significantly reduces head and neck fatigue.
The 20-vent airflow system channels fresh air through the helmet, accelerating heat and sweat evaporation to keep your head cool and dry throughout the ride.
Ionic+ Plant-Based Antibacterial Lining
The inner lining features IONIC+ plant-based antibacterial technology, designed to inhibit bacterial growth caused by sweat and moisture.
- Antibacterial & deodorizing fabric
- Reduces odor buildup
- High-density sponge with silicone padding
- Removable & washable for easy maintenance
Precision Fit for More Head Shapes
The integrated adjustment system allows easy fine-tuning with a rear adjustment knob, ensuring a secure and comfortable fit.
- Adjustable head circumference: 58–62 cm (L size)
- Compatible with multiple head shapes
- Stable fit without pressure points
Thoughtful Details for Everyday Comfort
- PC edge protection prevents liner wear and surface dents
- Y-shaped straps reduce ear friction
- Smooth buckle supports quick, one-handed operation
- Thickened chin pad for added comfort
- Breathable webbing that’s soft, skin-friendly, and moisture-wicking
