GIANT Rivet time trial helmet

Front to back, every curve and shape is fine-tuned through Computational Fluid Dynamics for optimal aerodynamics. Faster on average in various rider positions and yaw angles while delivering unrivaled fit and comfort. Features: - Optimized aerodynamics featuring a radius-shaped curvature designed through Computational Fluid Dynamics analysis. The unique shape reduces drag across all angles - From the crown of the helmet toward the rear, two dimples help channel airflow toward the tail - Four strategically placed large radius Aero Vent intake ports in the font and one large exit port in the rear maximize airflow through the helmet for superior ventilation - Aero Vent ports pull incoming air through the helmet and stream it through deep internal Aero Vent channels from front to the back, while maintaining superior aerodynamics - Element Strap System (ESS) brings together Cinch Pro™, Optimal Position Y, and Lite Form™ webbing into one fit and retention system for superior fit and comfort right out of the box - Cinch Pro™ fit system offers optimal coverage by cradling the occipital bone for full protection, support and comfort - Lightweight, Lite Form™ webbing wraps around the head better for a more secure fit and is hydrophobic so it won’t absorb sweat or stretch out like other webbing - Trans Textura Plus™ anti-microbial padding helps fight bacteria growth by pulling sweat from a rider’s head and transferring it through the Aero Vent exhaust ports. The natural property of the fabric inhibits microbes that cause odors Specifications: - Weight: 300g - Certifications: CPSC/CE;AS/NZS