Remark:Different age with different holding posture, simulation of the posture of hand, the most comfortable feeling to the baby, sleep magic device. Ultra-thin air permeable fabric, soft and comfortable and waterproof, load bearing capacity of over 70 jin, easy to use. Baby weight sharing on the back of the head, not focused on the spine, reducing spinal pressure. The legs are placed freely, and do not strangle the baby's crotch, avoiding the possibility of curving the leg.