Those with a head circumference of 60CM or less and a head height of 25cm or less can wear this. Shipping usually takes about 7 days (excluding weekends and holidays) after payment confirmation. We inspect all products and ship them to the buyer after confirming that there are no problems. We are sorry, but we do not accept returns or exchanges for purchased items. Inventory is shared across multiple stores. Depending on the timing, items may be out of stock.