The ONEAL MTB Helmet Defender Solid by O'NEAL is a lightweight All Mountain / Enduro helmet designed with a dual-shell construction to ensure an optimal and customizable fit. It features the innovative O`Neal Fidlock® Safety Aluminium Magnetic Closure, which allows for effortless opening and closing, even while wearing gloves. Weighing in at approximately 380g (±25g), this helmet offers a newly developed size adjustment system via a rear dial, complemented by reflective stickers for added visibility. The strap system is easy to adjust and secure, while the hypoallergenic and sweat-absorbent padding is removable and washable for maximum comfort. Additional features include oversized ventilation ports for superior airflow and cooling, an adjustable and replaceable visor, and compliance with EN1078 standards for bicycle helmets.