Basic long sleeved undershirt of 100% combed cotton. Ideal for children with problems of allergies or intolerances to materials that are not natural. It is an all season fabric that adapts to the body without giving up its totally natural and breathable material. It has no seams, so it does not rub the skin anywhere and is very comfortable. The neck and cuffs are adaptable and are specially designed so that they do not lose their shape.