Swaddling (or wrapping) is used to help newborn babies remain sleeping on their back, which has been proven to reduce occurrences of SIDS. It helps soothe and settle a fussy baby, especially one that is colicky and irritable. Newborn babies are not able to regulate their body temperature, so using natural merino, merino & cotton blends and 100% pure cottons to wrap/swaddle will help this. And most importantly, evidence suggests swaddling helps babies sleep longer and more deeply with fewer incidences of awakening and an increased ability to resettle themselves.

The extra wide body pocket allows for the natural hip movement, meaning the legs will naturally fall into the 'frog' position, allowing the joints to develop in the hips. This helps to prevent Hip Dysplasia.
Using the body pocket means they are already 80% wrapped before you even start, which means no feet escaping - ever. And because there is only one way to use them, you wrap them correctly each and every time. In fact they are so easy to use, even dad can do it!. And importantly, there is less chance of over heating, as you are not adding several layers of extra fabric around your baby to try and get a secure wrap.
Lay the wrap out where you plan to wrap baby. Both wings should be on the same side. Slip baby into the fitted body pocket and wrap the shortest wing under baby which will mean one arm is already wrapped. Then stretch the longest wing across the front of baby and wrap tight around and under and tuck into the side. HINT: If you have an especially wriggly baby then when you wrap the longest wing around the front, add a twist first, which will allow you to take it high around the shoulder and hold the arms in lower.