Applicable age: 0~48 months Back method: horizontal hug / chest / kangaroo / back Waist circumference: 71cm~110cm Bearing capacity: about 25 kg Fabric: face cloth cotton, fabric: face cloth cotton Cotton material multi-function, 1 piece travel" easy storage (waist stool with storage function) Micro-circulation breathing window, cool and breathable summer is not stuffy, breathable mesh, three-dimensional mesh structure, intimate anti-stretch pad, focus on the comfort details of each baby Newborns hold the neck and protect the head from the head. The baby's head and neck are very soft within 3 months. Good head and neck function is very important. Compared with inferior straps - not conducive to joint development, inferior straps do not consider ergonomic design, the baby's bones are oppressed during use, seriously affecting bone development