It is made of polyester. This t-shirt available in different colors and sizes, could fit with different customer. Fast dry so it can be use when doing outdoor activities like track and field, running, marathon, outdoor evets and more. You can custom your own logo and do adverts when wearing it. This shirt is a round neck design will be more comfortable and daily wearing. The price included shipping cost to ca, over 1000 pcs by ocean. Thanks for your inquiry. Paragraph 27 colors