When your swaddled baby begins to show signs of rolling, it is time to transition them to arms-out sleeping for their safety. The Butterfly Cardi is innovatively designed to be a transition aid worn over your baby’s swaddle or sleeping bag, to help them transition to arms-out with minimal sleep interruptions and maximum sleep comfort. The 0.2 TOG rating makes it a light layer suitable for use over any sleeping bag in any room temperature. The Butterfly Cardi features unique arm pockets to create a sense of containment, the feeling your baby will be used to from swaddling. By gently releasing one arm out of the swaddle at a time and into the pocket, you will be easing your baby to sleep fully arms-out over a period of 10 days, helping them get used to the new sensation as you go. With their arms inside the pocket, your baby will also have access to their hands for self-soothing. For babies who may still have a strong startle reflex, the press studs can be adjusted to make a firmer fit around your baby's torso. Read full How-to-use instructions here. The super stretch in all directions will ensure your baby remains comfortable and allow for full chest expansion when breathing. The position of the Butterfly Cardi on the body will not interrupt the natural sleeping position for healthy hip joint development. Made with our signature premium GOTS certified organic jersey cotton. Natural fibres are better for sleeping for the simple reason they are breathable, and help your little one regulate their temperature overnight. Our certified organic fibres are also skin-friendly and sensitive on eczema and dry skin conditions. All ergoPouch fabrics are dyed with non-toxic water based dyes. Not to be used as an alternative for swaddling.