The material is a thinner T-shirt type material, very soft and comfortable. You can’t see through it. It is cut generously, not fitted. I generally wear an 8 & medium was a good fitWas a nice product. Gave as gift. She loved it.Ordered a Large because the Medium was $10 more! Hence me taking off one star! You can see the razorback on my shirt, but you can tell from the neckline that the Large was VERY large! I probably could've worn a Small, but was concerned about the length of top, and bustline. For reference I'm 5'10 and 155lbs and wear a 36D. I have a very long torso, and hate it when shirts are too short! The heat index was 115°F, and although it was hotter than Satan's armpit on the field, I was actually quite comfortable. Very lightweight was able to wear a Nude bra without seeing through the top.