Thank you for viewing. Micro m-cro 3D Zaurus Children's helmet with a dinosaur pattern. Size can be adjusted by turning the dial on the back of the head. Strap length adjustable. Size: 48-52cm Width: Approximately 13cm Length: Approximately 18cm Weight: Approximately 250-300g Recommended age: 2-5 years old *The recommended age is only a guide. Please measure your child's head circumference before purchasing. (How to measure head circumference: Use a measuring tape or string and measure the line that passes through the forehead, the most protruding part of the back of the head, and the points just above the ears. That length is the head circumference.) ⚫︎The light on the back of the head does not light up, possibly due to dead batteries. ⚫︎There are scratches and dirt on the surface. ⚫︎The inside is in relatively clean condition. ⚫︎Please check the condition in the images. ⚫︎The 3D dinosaur horns made the child happy to wear the helmet. If you have any questions, please feel free to ask. Thank you ⭐︎