Built around a unified EPS and polycarbonate shell, this mountain biking helmet delivers reliable impact resistance alongside optimized breathability. More than twenty strategically positioned openings channel consistent airflow through the interior, maintaining rider comfort during extended climbs or intense descents across all four seasons. Designed for both paved routes and rugged trails, it transitions seamlessly between road cycling and off-road adventures without compromising established safety benchmarks.
Precision Fit and Maintenance
A full-circle dial mechanism enables rapid, one-finger tightening to match head circumferences ranging from 58cm up to 64cm. Internal components feature removable textile liners and dedicated chin cushions that are fully washable, ensuring long-term hygiene after intensive training sessions.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | COLNELS |
| Model Number | C-339 |
| Shell Composition | EPS + PC (One-Piece Molded) |
| Ventilation Count | > 20 Air Vents |
| Size Range | L (58–62 cm) / XL (60–64 cm) |
| Unit Weight | L: 246 g ± 10 g | XL: 248 g ± 10 g |
| Head Adjustment | 360-Degree Rotation Dial (Single-Hand Operation) |
| Interior Padding | Washable Comfort Liner & Chin Guard |
| Certification | GB Standards |
| Available Colors | Black, Golden Yellow, Blue Silver, White |
| Suitable Riders | Men and Women |
| Climate Rating | All Seasons |
| Primary Disciplines | Mountain Biking, Road Cycling, General Outdoor Riding |