These lovely classic t-shirts are great. I got a pack for each of my parents, as they are great for men and women alike, and I even got one xxlarge pack for myself, to turn into loose beach dresses, and we couldn't be happier. The quality is very good and the fabric is thin and therefore they are ideal for the summer. The size is a little small, but having read the reviews, I got a size larger and they fit perfectly. The white, black and grey colours are great, and the design is classic and incredibly convenient. Also the crew neck is rather loose, so it is perfect for people who don't like tops that are very tight around the neck. I can see that some reviewers had problems washing them, but I washed them with cold (30 degrees) water and I had no problems. To be honest, I don't know about the 40 degree wash suggested by the instructions, as I wash everything with cold water anyway.
The white and black t-shirts are made of 100% cotton, and the grey t-shirt is made of 94% cotton and 6% polyester. They are made in Morocco. They can be machine washed and ironed.