The Baby K’tan Original is made of a 100% natural cotton with unique one-way stretch. The soft fabric will give you and your little one a warm and cozy hold. Wear baby in multiple positions, without any wrapping or buckling. Sizing Tips - The carrier size generally corresponds to the size of a fitted t-shirt. If you are small (1.5 meters or less), we recommend using a smaller size. If you are between two sizes, we recommend you take a smaller size. If you are pregnant, use your pre-pregnancy size. The baby carrier must be adjusted!