Long-sleeved, 100% cotton undershirts with a train pattern (3-pack) Size 100, but they run small. They've also been washed and dried in a machine, so they might fit a child who is slender or who usually wears size 90. Photos 1-5 are slightly thicker, and photos 6-8 are slightly thinner. If you purchase these with other items, I will offer a discount, so please let me know.