Used a few times. The length of the straps is adjustable, so I think it can be worn by a wide range of ages. My son wore it for his first birthday. It was a little big, but he was able to wear it without any problems ✨ I think it's suitable for ages 2-4. There are no noticeable stains, but this is a used item, so please refrain from purchasing if you are looking for a perfect item. It's on sale, so it's first come, first served ✨