0 formaldehyde\uFF5C0 fluorescent agent\uFF5C0aromatic amine: Strictly implement safety standards, eliminate harmful substances from the source, and completely say goodbye to the hidden dangers of sensitization and chemical residues.Even if the baby bites unconsciously, it is still safe. Skin-friendly combed cotton: soft and breathable, delicate care for the baby's delicate skin, not sultry to wear in spring and autumn, and not easy to pilling. Finely divided according to the characteristics of the baby's foot development to ensure a perfect fit\uFF1A XS size (0-6 months): The foot length is about 6cm, caring for the petite feet of newborns to infancy. S size (1-3 years old): The foot length is about 8cm, which fits the baby's active feet during the toddler period. M size (3-5 years old): The foot length is about 10cm, which is suitable for the growth needs of babies in kindergarten. Non-slip silicone points: The bottom of the socks is full of food-grade silicone particles, which greatly increases friction, making the baby move more steadily on the floor and crawling mat, and effectively preventing slipping. Over-the-knee lengthened design: it better wraps the calves and is not easy to fall off. At the same time, it provides additional warmth for the knees, which is suitable for the slight coolness of spring and autumn. Loose and not leggings: The mouth of the socks adopts high-elastic ribbing, which fits without compression, ensuring smooth blood circulation and leaving no strangulation marks.