KPLUS 10th Anniversary Special Edition — SIGMA Road Helmet
The SIGMA Road Bike Helmet is a special tribute celebrating KPLUS’s 10th anniversary. Derived from the mathematical symbol Σ, representing "sum", SIGMA perfectly embodies KPLUS’s exquisite craftsmanship and core philosophy developed over the past decade.
The SIGMA features an innovative arrangement of internal air vents and airflow channels embedded within the shell. Validated through extensive wind tunnel testing and precise adjustments, it provides exceptional ventilation and cooling performance without sacrificing safety or weight balance.
💡 Helmet Fitting Tip: We recommend measuring your head circumference before purchase to ensure a safe and comfortable fit!
Size & Weight
- Size S: 53 - 56 cm (255 g)
- Size M: 56 - 59 cm (288 g)
- Size L: 59 - 62 cm (338 g)
Technical Features & Highlights
- FIDLOCK® German Patented Magnetic Buckle: Quick and secure one-handed operation for effortless fastening and removal.
- Silver Ion Antibacterial & Deodorizing Webbing: Inhibits bacterial growth and prevents unpleasant odors after intense rides.
- Anti-Slip Eyewear Slot: Allows convenient, secure storage of your cycling sunglasses on the helmet.
- Slow-Rebound Memory Foam (COOLMAX®): Conforms comfortably to your head shape for long-lasting comfort.
- K2 Head Lock Adjustment System: Fine-tune the fit for optimal coverage, wrap-around comfort, and stability.
- Dual Safety Certifications: Fully certified to European CE-EN1078 and Taiwan CNS safety standards.
