Hello how may I help you? I need to purchase a bike helmet I see three bike helmets: Green, red, and black. Which one? A black one. Confirmed. Would you like to continue shopping or checkout now? Do you have any in youth sizes? Unfortunately, only adult sizes available for the helmet ok. I would like to purchase the black helmet in adult size Okay, I have placed that order for you. Anything else I can help with? No. that is all. Take care