To use these kids' sleep pajamas, simply put them on before bedtime. They are designed for a comfortable sleep experience. When it comes to care, make sure to machine wash them in cold water with similar colors. Don't use bleach as it might damage the fabric. Tumble dry on low to keep the pajamas in good shape. Avoid ironing and dry cleaning as they can also harm the material. With proper care, these pajamas will stay soft and comfortable for a long time.