Whether with short or long sleeves, we always recommend buying bodysuits made of cotton or organic cotton. Organic cotton is our favourite in terms of sustainability. Not only do you protect the environment, but also your child's delicate skin. Among other things, cotton can not only absorb up to 20% of its own weight in moisture or body fluids, it is also breathable and cools on warm days and is cosy and warm on cold days. If you have any questions about the different materials, just come here to the category Notes on materials.