Workman Black Polo Shirt Size: L Set of 2 The fabric was thinner than I expected, so I haven't worn them at all. I think they're breathable, but you'll definitely need to wear something underneath as they are see-through (see image 5). Depending on the lighting, your body lines might also be visible, so they might be better suited for someone who likes a more fitted look. I'm selling them because I don't think I'll have a chance to wear them. No price negotiations. [Shipping Method] Yu-Packet Post I plan to drop them off at the post office on the same day or the next day after purchase. Please note that delivery may take 3-10 days depending on the destination and traffic conditions.