I purchased these shirts for our daughter in fall-winter 2018. It was to go under her uniform’s dress shirt (which was a short sleeve white shirt). Unfortunately there’s a necktie with that uniform. So the collar of the short sleeve shirt made it fit tight around her neck. So to fix that problem, (and still have a long sleeve shirt for the weather), I cut off the turtle neck of it. It worked out okay. The material seem to be pretty sturdy.
I don’t know if I would buy them again because the area around the sleeve near the wrist were very loose. But they served their purpose.