The BABYBJÖRN multifunctional Baby One Air Carrier is suitable from birth to 3 years. It adapts as your baby grows, offering 4-way front and back carrying positions. Easy to use, the carrier holds your baby in an upright position with head and neck support, free movement for their arms and legs and ensuring free air passages. The innovative design gives you the important closeness with your baby, allowing you to carry your baby securely while keeping your hands free to get on with your day. Crafted from a unique and airy 3D mesh that helps to cool the areas that are most prone to perspiration, the One Air Carrier has been developed to be extra soft for newborns yet strong enough for everyday use. Switch between front and back wearing options with a fully adjustable seat and head support, the carrier is easily adapted as your baby grows. A waist belt and padded shoulder straps relieve pressure on the back and shoulders, ensuring both you and your baby are comfortable and safe. Benefits: 4 front and back carrying positions Ergonomic leg position Luxuriously padded shoulder straps Pressure-relieving waist belt Inbuilt infant insert Adjustable head support Back carrying for your toddler Hip-healthy 3D fabric consisting of 3 layers Child-Friendly materials: free from harmful substances Main: Polyester. Waist Belt Lining: Polyester. Leg Zip Guard: Cotton. Complies with European EN 13209-2:2015 and American ASTM F223 Safety Standards. Age: Newborn to 3 years (approx) Weight: Min: 3.5kg. Max: 15 kg. Height: Min: 53cm. Max: 100cm.