IMPROVE THE CHILD'S HAND-EYE COORDINATION: The cute animal baby wrist rattles can not only attract the baby's attention but also exercise the baby's color discrimination and hand-eye coordination. The colors are bright and rich, which visually stimulate the child's vision and improve the child's hand-eye coordination. If you are in need of a sensory toys to help your baby grow up, this baby rattle socks newborn toys will be very suitable.STIMULATE THE BABY'S DESIRE TO EXPLORE: Each set contains 2 foot socks and 2 wrist rattles. There are also bells inside. When the baby's wrist foot socks shake, make a sound, encourage the baby to reach out and grab, enhance hand-eye coordination, awaken auditory consciousness, and enhance motor skills. The shaking of hands and feet drives the sound. The baby will find the source of the sound to help the baby explore and learn.REASSURING BABY TOYS SET: Newborn rattles woven from natural cotton, comfortable and non-toxic, skin-friendly and hypoallergenic, tested by dermatology, safe for babies' delicate skin. Breathable and soft knitted fabric socks are very comfortable for the baby's skin. Lovely bright colours and high quality fabrics to stimulate their attention.EASY AND FUN: Gorgeous little interest grabbers for very young babies who are learning about control of legs and arms. This baby rattles sock helps the baby learn to find his feet and hands. The wrist rattle comes with a simple Velcro, so it is easy to put on and remove. Have enough fabric left for adjusting as baby grows. You can also attach the wrist strap to the pram, car seat and chair arch as extras.