Hello how may I help you? I would like to buy a bike helmet please Sure. I can help you with a bike helmet. We have two styles, 41A &41B. Which one is better for someone with a large head? 41B is for a man, so it has a larger head size. Okay, does the 41B come in blue? Yes. navy blue. Is that okay? Yes. What is the price on that helmet? 23.50. Okay, I want to order it then Sure. Shouls i charge it to your account? should Yes please Okay. it will arrive in 5-7 days. Great, thank you!