hello simone 2025aw I bought this last year and have been keeping it... but I haven't had a chance to wear it, so I'm putting it up for sale. It's not too big even for a 4-year-old, so I think it can be worn from around 3 years old. Width: 26cm Length: 20.5cm It's new and unused, but it has been stored at home. The tag is still attached. Please feel free to ask if you have any questions.