These Kavio brand tees are 60% polyester and 40% cotton. The amount they shrink is very minimal, therefore they fit pretty true to age. But when in doubt, size up! These tees are very durable and still look brand new even after years of wear. These tees have lasted through all 3 of my kids!
Sizes 6 Month, 12 Month, and 18 Month are bodysuit style. Sizes 2T to 6-8 are regular tees.