KPLUS SIGMA Road Cycling Helmet (10th Anniversary Edition)

Celebrate a decade of innovation with the KPLUS SIGMA Road Cycling Helmet—a special 10th-anniversary release. Named after the mathematical symbol Σ (Sigma), representing the "sum," this helmet embodies ten years of refined engineering, safety, and performance.

Designed for serious cyclists, the SIGMA features advanced internal air-guide ventilation channels perfected through extensive wind-tunnel testing. Experience optimal aerodynamics, superior heat dissipation, and uncompromising safety—all without adding extra weight.

Key Features & Highlights

• Aerodynamic Ventilation: Internal air-guide grooves channel airflow to maximize cooling during intense rides.
• German Patented Magnetic Buckle: Quick-release magnetic buckle allows smooth, single-handed operation.
• Silver-Ion Antimicrobial Webbing: Prevents bacterial growth and resists odor build-up over time.
• Eyewear Grippers (Temple Anti-Slip Pads): Securely holds your cycling sunglasses in place when stored on the helmet.
• Slow-Rebound Memory Foam: Conforms comfortably to your head shape for long-distance riding comfort.
• K2 Head-Lock Fit System: Precision micro-adjustment dial ensures a snug, stable, and customized fit.
• Dual Safety Certification: Fully certified under European CE-EN1078 and Taiwan CNS safety standards.

Specifications & Sizing Guide

Tip: Measure around the widest part of your head (just above the ears) before purchasing to ensure the best fit.