Bright color can promote the development of baby's vision; The sound of soft sand can promote the development of baby's hearing. The intimate ergonomic shape, convenient for the baby's small hand grip, can promote the development of the baby's hand movement ability; A variety of different materials can promote the development of baby's touch. It has a link ring and is very convenient to carry.

      In the first few months of life, the baby has no knowledge of some things and has little activity; They need to rely on hearing, vision and touch to explore everything. In this stage, infants are most attracted to the surrounding environment, and in order to effectively promote sensory development, a series of brightly colored and voiced toys should be chosen to place them around the baby.