All bodysuits are 100% combed cottonBodysuits are printed in-house in SoCal with industrial water-based inks digitally that absorb into the fabric of the shirts for an ultra soft feel. For best results, wash them inside out with cold water and tumble dry on low. 0-3m - 6-12lbs / 21-24in 3-6m - 12-16lbs / 24-26in 6-9m - 16-20lbs / 26-28in 12m - 20-24lbs / 28-30in 18m - 24-28lbs / 30-32in 24m - 28-32lbs / 32-34in This item is not affiliated with any existing intellectual property or trademark unless specified in the Product Description.