The fabric of children's pajamas focuses on the comfort of babies. Generally speaking, the following four kinds are popular: cashmere, cotton, modal and cotton. Among them, velvet is a high-grade fabric, which is soft, comfortable and breathable; Cotton is one of the most common fabrics, which is soft and skin-friendly, moisture-absorbing and breathable; Modal is a kind of regenerated cellulose fiber with good moisture absorption and air permeability, which is mostly used in summer pajamas. Cotton and linen blended with two natural fibers, soft, comfortable and breathable.