Hayfield Baby Bonus 4 ply is a super gentle yarn that is great for little one's sensitive skin. Available in a sweet selection of soft pastels, Hayfield Baby Bonus 4 ply is a versatile and great value baby yarn. Hayfield Baby Bonus by Sirdar is premium 100% acrylic yarn in shades specifically designed for baby knits and crochet makes. A super soft acrylic yarn that is gentle on your hands. Baby Bonus 4 ply is ideal for knitting and crochet projects. This knitting yarn is, soft, light and comfortable to knit with for all seasons. 100% acrylic. Machine washable at 40 degrees/ wool cycle. Do not bleach, do not iron.