Soft and environmentally friendly sterile fabric is more comfortable and breathable, Two Adjustable seat belt system, according to children's different weights and heights, it is safer to use, Multi-buckle shoulder straps, waist belt adjustment, can adjust the most comfortable position according to the baby's body shape, Newly designed ring-shaped head cushions and bone-shaped small neck pillows, as well as an increased waist support belt taking into account ergonomic