Designed to be worn over your baby's swaddle, for babies who prefer to sleep arms-up rather than swaddled. Swaddled babies who prefer hands-up sleeping or are ready to transition to arms-out sleeping (typically between 2-6 months). Not all babies enjoy having their arms swaddled in. That's where the Butterfly Cardi comes in. This innovative design allows you to keep your baby's arms close to their face, with the hands up option. Additionally, it can be used as a transition aid for when your baby is ready to move into arms-free sleeping. You can simply wear it over your baby's swaddle to help them adjust to the change. 95% Organic Cotton / 5% Elastane The Butterfly Cardi is made from Global Organic Textile Standard (GOTS) certified organic cotton that is non-toxic and gentle on irritable skin. All ergoPouch fabrics are dyed with non-toxic water based dyes. The Hip Harness Jersey Sleeping Bag is reviewed by the Eczema Association of Australasia (EAA) as a skin-friendly product.