Professionally screen printed on a white or cream t-shirt with black ink. The cream is organic cotton. Available in sizes 18M, 2, 4, 6. We recommend washing in cold water, on the delicate cycle. Tumble dry low heat. Sizing recommendation: Size two can fit children ages 1-3, size four can fit children ages 3-5, and so on and so forth. Please size up or down according to your child's size.