Children's shirts/onesies are made of cotton. They are soft and thicker than a normal tshirt.  They are white. We offer shorts to match.  They are listed separately on the website.
Onesie sizes: 0-3m, 3-6m, 6-9m, 12m, 18m
Shirt sizes: 6m, 12m, 18m, 2T, 3T, 4T, 5T, 6