Experience superior protection and comfort with this advanced aerodynamic helmet, designed to offer excellent wind resistance through its streamlined shape and lightweight, sturdy construction. Crafted with a high-strength PC shell, this helmet provides outstanding impact and corrosion resistance, ensuring durability and safety during every ride. Key Features: · Aerodynamic Design: The sleek, streamlined shape reduces wind drag, enhancing performance and comfort while maintaining breathability. · One-Piece Integrated Construction: The helmet features a novel one-piece design that not only strengthens its structure but also delivers a modern, enhanced appearance. · Adjustable Comfort System: Equipped with a 4-tier height adjustment mechanism, this helmet allows for a fully customizable fit to suit individual preferences. · High-Strength PC Shell: Made from premium PC material, the outer shell offers superior impact resistance and long-lasting corrosion protection. · Impact-Absorbing Mid-Layer: The inner layer is constructed with high-density EPC foam, effectively absorbing shocks and protecting against external forces. · Removable and Plush Interior: The thickened, detachable lining provides enhanced comfort and is easy to clean, ensuring hygiene and prolonged use. · Secure Fit Adjustment: The knob adjustment system allows quick and precise circumference tuning for a snug and secure fit. · Ponytail-Friendly Design: The four-height adjustment system includes a convenient ponytail-compatible feature, catering to riders with long hair. Specifications: · Material: PC Shell, EPC Foam · Colors Available: Pink, Blade, White, Black, Dark Diorator, Orange (Optional) · Dimensions:  - Medium (M): 25 x 20 x 16 cm / 9.8 x 7.9 x 6.3 in  - Large (L): 26 x 22 x 16 cm / 10.2 x 8.7 x 6.3 in · Sizes: Medium (M) / Large (L) Optional · Weight:  - Medium (M): 262g / 9.3oz  - Large (L): 287g / 10.2oz Package Includes: · 1 x Aerodynamic Helmet This helmet combines innovative design with practical features to provide a secure, comfortable, and stylish solution for cyclists and outdoor enthusiasts. Its adjustable fit and durable construction make it an ideal choice for enhanced safety and performance.