<human>: What are the differences between a t-shirt and a polo shirt?
<bot>: The main difference between a t-shirt and a polo shirt is their construction. A t-shirt typically consists of a cotton or polyester blend that has a more relaxed fit, while a polo shirt will usually be made from a finer fabric like cotton or linen with a more tailored fit. Additionally, t-shirts often have short sleeves or no sleeves at all, whereas polos may include long sleeves or even a collar. Lastly, t-shirts are usually worn untucked, while polos are typically tucked into pants or shorts.