... than 2 months, if baby is too small,the neck muscles are not yet mature, temporarily do ... breast-feeding after about 30 minutes should be using the carrier4.When washing, pls do not use bleach ... is large, more than 6 months, it can use the back face to mother’s face method7.Pls ... and thick, comfortable, long time use, can effectively decompose the pressure on the shoulder, not easy to feel tired3.unique ...