Popular color: Oxford Blue Ergobaby Adapt Cool Air Mesh [Items Included] Main body The following is quoted from the manufacturer: The head & neck support supports the neck, and the seat can be adjusted in a total of 9 stages to suit growth and body shape. It fits at any age and supports a natural "sitting posture." ADAPT is the only carrier that can be adjusted not only to the body shape of the mother and father, but also to the baby's body shape. Adjust the width of the seat by attaching the seat adjuster tab on the waist belt to the color guide on the waist belt. It can be used from the beginning of neck sitting (around 3 months old) to the growth period (period B) of babies around 9 months old, perfectly matching their body shape. "ADAPT" can be used from newborns without an infant insert. 3D air mesh is used throughout the carrier. It is comfortable with high breathability. The seat can be adjusted in a total of 9 stages to suit the baby's growth and body shape. It fits at any age. With a support function to support the neck and head of newborns, even first-time mothers can use it without hesitation. ① From birth to 9-10 months, height increases by 20cm. It supports a "sitting posture" that perfectly matches the body shape. ② The wide waist belt with lumbar support and shoulder straps are designed to distribute the baby's weight evenly. Makes long hours of carrying easy. ③ The head & neck support supports the neck and head according to growth and the situation. Fold it inward for firm support until about 6 weeks old. When the baby sleeps, stand it up to support the head. ④ In addition to the head & neck support, a built-in sleeping hood supports the head. It is also useful for sun and wind protection. [3 Positions] [ADAPT Adapt] Carrying style: 3 positions 1. Facing in 2. Hip carry 3. Back carry [Target age] Facing in: 1 month to 24 months (up to 12.2kg) Hip carry: 6 months to 24 months (up to 12.2kg) Back carry: 6 months to 36 months (up to 15kg)