This Gildan Ultra T-shirt is a total workhorse of a tee. It's a 6-ounce heavyweight shirt, so it feels substantial and won't turn see-through. The exact fabric blend depends on the color you choose: Ash Grey is 99% cotton, most heather and safety colors are 50/50 cotton-poly, and Sport Grey is 90/10. But they're all preshrunk, which is great. The key feature is the \Ultra\ construction: it has a seamless double-needle collar, plus tape along the neck and shoulders for extra durability and to prevent stretching out. The sleeves and bottom hem are also double-stitched. It's quarter-turned (seams are shifted slightly) to avoid that annoying center crease down the front. It comes in a huge range of sizes from S all the way up to 5X. Whether you're buying it for a custom print, as a plain work shirt, or just for everyday comfort, this is a reliably good, basic tee that holds up wash after wash. Gildan uses a lot of USA cotton and renewable energy in their process too.