The wool dryer balls are safe for people even for babies, children, and people with sensitive skin, and also suitable for towels and cloth diapers since the dryer balls are made of 100% nature wool and dont use any harsh chemicals. It can be a perfect substitute for drying bed sheets, natural wool, which can be recycled up to a thousand times. This wool dryer ball is suitable for all types of clothing, towels, linens, natural fibers, cotton, linen, bamboo, etc., can decrease wrinkles and static in clothes for time-saving.