The BabyBjorn Baby Carrier One is an ergonomic baby carrier in a soft cotton blend that can be used for children aged 0 to 3. Enjoy the closeness of babywearing for longer—in a way that’s comfortable for both you and your little one with the ergonomic Baby Carrier One, crafted in a soft cotton blend. The sturdy waist belt and padded shoulder straps relieve pressure on your back and shoulders and make babywearing possible for newborns and up to the age of three.