When selecting fabric for your baby, prioritize soft natural fibers like organic cotton, bamboo, and linen that are gentle on delicate skin. Breathable fabrics like cotton and bamboo also help regulate body temperature to avoid overheating. Ensure any synthetic fabrics are OEKO-TEX certified free of harmful chemicals. Choose lightweight, flexible materials that allow movement. Stay away from scratchy synthetics and stiff denim. Read labels carefully and learn fiber properties. Touch test for softness. The top priorities are softness, breathability, flexibility, and purity.