Baby helmet, gray, star pattern Standard diameter: 48cm (inner circumference) Minimum diameter: 43cm (inner circumference) Maximum diameter: 55cm (inner circumference) Height: 10cm (inner circumference) I bought this when my child started to stand up, but they didn't like it and I didn't use it much. I washed it twice, before and after use. I hope to pass it on to someone who needs it ( ˊᵕˋ*) Purchase price: 1,290 yen --------------------- For protection against bumps! ・Thick cushioning to protect your precious head ・Stylish and cute muted colors ・Mesh material with good breathability to prevent stuffiness ・Ultra-low formaldehyde, gentle on the skin