I write your address on a sticker, pack your shirt and ride my bike to the post office. USPS seems to make the most sense to me. I usually don't send tracking numbers because they're hard to key in manually but I can if it's important to you because I appreciate you and think it's amazing that I get to make these shirts and you liked it enough to buy one and wear it. Sometimes I get distracted on the way but I'll do my best to let you know if it will be late.