I am selling this because the baby disliked it immediately after putting it on. It has only been used for a fitting. ▼Quoted from the website Colulu Baby Helmet - Prevents falls and head bumps for babies aged 1 year old. Baby head guard. * Brand: Colulu * Size: Head circumference: 47~69cm * Material: Inner fabric: cotton gauze, Outer fabric: polyester mesh * Colulu - Colulu's baby helmet protects the baby's head 360 degrees from front, back, left, and right! This baby helmet, with its cute animal series, can be adjusted to fit as the baby grows! This baby helmet, with its cute animal motifs, is designed to be both functional and stylish. * Babies are constantly moving around and losing their balance, especially when they start to stand up or walk. "I'm worried about my precious child getting hurt from falling." This baby helmet is recommended for parents who feel this way. Why not protect your precious baby? * This baby helmet is easy to adjust. Easily adjust the size with Velcro! You can use it for a long time as your baby grows quickly. * Choose from 4 designs: You can choose from 4 animal designs: "rabbit," "dinosaur," "bear," and "panda." * Shock-absorbing cushioning and breathable ventilation: The inside is made of thick, highly elastic sponge to protect against impact. The lining is a mesh design that allows air to pass through, keeping the baby comfortable even when they sweat. * Outer dimensions: Width: 17cm~24.5cm x Depth: 14cm~19cm x Height: 16cm * Inner dimensions: Width: 15cm~22cm x Depth: 8cm~15cm x Height: 16cm * *This is the approximate size when adjusting with Velcro.