Fabric 100% Organic Cotton and Azo-dye free. Details Comfortable stretch smock chest, self-tie straps, loose fit in body and leg, smock leg for baggy fit. Sizes 2Y and below features buttons in leg for easy diaper change. How to wear Cold days Add a cardigan or jacket on top. Warm days Texture muslin is very breathable, simply wear as is with a pair of low cut socks and your little cutie is good to go.