It is your baby’s natural sleep position that allows your baby access to their hands for self-soothing. Babies often use their hands to settle themselves to sleep, by sucking on their fingers or gently rubbing their cheeks. Medical research suggests that babies sleep better if they are able to self-soothe. So self-soothing = more sleep for the whole family. The Swaddle UP is the only zip-up swaddle available that allows your baby to sleep in the arms UP position. The Swaddle UP requires no complicated wrapping, so everyone can swaddle right every time. Snug fit makes your baby feel secure & helps to calm their natural startle reflex Eliminates excess loose fabric in the cot Wings prevent face-scratching May reduce the risk of your baby accidentally rolling onto their tummy Genius two-way zipper for easy nappy changes Hip-healthy design allows hips and legs to flex naturally INPAA approved. Use the Swaddle Up from birth until your baby shows signs of trying to roll over. Select size according to your child’s weight, not their age.