This newborn soothing baby swaddle is made of high quality cotton and the material is not only super soft for babies with delicate skin but it is sweat absorbent and breathable to keep newborn babies comfortable and without overheating. The cotton material is more delicate and elastic with a strong sense of wrapping to protect your baby sleep. The womb like feeling design of our baby swaddle sleep sacks provides a comforting wrap which eases your baby transition into the world and prevents spontaneous movements from waking him up helping your little baby feel secure and sleep more peacefully with longer dreams. The soft and durable hook and loop design allows you to adjust the swaddle blanket to fit your baby in every sleep stage from newborn with the arms in to sleeping with both arms out. Our baby swaddles are tight at the top and loose at the bottom with a cozy leg pocket at the bottom which allows baby hip to move freely and is good for baby hip development.