Material: cotton cloth, soft and comfortable, it can protect your baby's skin Wrist straps (can be adjustable size), Socks are 15cm long and 6.5cm wide This is a beautiful watch band, colorful, cute little animal style, built-in rattle sound is relatively small, suitable for little babies. Baby will like to observe their own fingers from about 3 months, they would like to look at the fingers and suck their own fingers, so can bring the baby with a wristband, that can make it easy for the baby to find his own small hand. Promote baby's vision, hearing, and intelligence development There are built-in small rattles in the insect that can give off soft rustling, (the sound is relatively light, this is to let the baby to look for), can attract the baby's attention, brings the baby to hear the ringing tone while moving hands, gives the baby a sound world