Lightweight and breathable XS size pink toddler helmet. I purchased this helmet with good reviews on Amazon and used it for my child from about 1 to 4 years old. It was too small for a 5-year-old, so I would be happy if someone else could use it. It was light and easy to adjust the size with the dial at the back, so it seemed comfortable, and my child didn't mind wearing it. It was used as a spare at my parents' house, so it's in good condition. The included bag has a hole in it, but I will include it. I painted over the name written on the inside with black paint. It has the "CE EN1078" marking and was purchased for bicycle use. The following is quoted from the Amazon website where I purchased it. I haven't measured the head circumference. Helmet for children, lightweight, for kids, bicycle helmet, toddler, kindergarten, elementary school students, 1-8 years old, head circumference (46-56cm), adjustable, unisex, cute, size adjustable, children's safety, outdoor, scooter, commuting, breathable, cool, toddler, kindergarten, elementary school students - Color: Pink - Size: XS Thank you for looking.