Specifications: Brand: ROCKBROS Material: PC+EPS Weight: approx. 270g Size: 58-62cm Age group: Adult Features: Excellent material: The ROCKBROS bike helmet is designed with an outer layer of PC material and a middle layer of EPS foam to provide the ultimate impact resistance and ensure your safety while riding. Stable and robust: The combination of high-hardness PC material and high-density EPS foam not only improves the structural stability of the helmet, but also effectively absorbs external forces and easily copes with various environments and conditions. Easy to edit: With a quick-trip design, it can be easily controlled with one hand, so it can be put on and taken off quickly, which is convenient and fast, making your riding easier and more enjoyable. Comfortable and Breathable: Comfortable design, 360 ° all-round fine adjustment system, fit for the head, multiple large holes and breathable design, so you can stay dry and comfortable and enjoy the fun of riding. Suitable for different head circumferences: Removable lining, thickened design, increase comfort at the same time, with Y-shaped skin-friendly webbing, adapt to different face shapes, combined with a simple and atmospheric appearance, let you be unique when riding.