Soft Cotton Yarn Kit: Selected pure cotton material. The baby cotton yarn is lightweight and breathable, with a soft and delicate touch. When worn close to the skin, it is gentle and non-irritating, especially suitable for baby skin and various soft baby projects and handicraft projects, providing a reassuring and comfortable weaving experience. Suitable for knitting needles of size 3.25-3.75mm, suitable for crochet needles of size 3.5-4.0mm 20 Colors Options & Creative Freedom: This complete crochet yarn kit contains all 20 pure and vivid colors. Each small ball of the soft yarn weighs 25g/0.88oz and is 82m/89.6yd long.