If you want to knit a swaddle wrap for newbornthen you should also pay close attention to the quality and type of yarn being used for the project. Since babies and toddlers have sensitive skin, it’s important to use yarn which will not irritate their soft skin. The yarn should  be made with material which is not scratchy and will not create a lot of lint or pill. The best yarn to consider is high-quality cotton and merino wool. Acrylic yarn is also a good option for children's clothing as it’s soft, gentle on the skin and easy to clean. In addition, synthetic fibers are low allergen, because they do not contain animal substances.