The Beco Butterfly Baby Carrier combines great ergonomics, excellent weight distribution and stylish design. Every piece is handmade from top quality designer fabric and heavy duty webbing and buckles, and can be used with children from newborns to toddlers, in both front and back carries. The innovative internal sling enables you to securely buckle your baby into the carrier, then handle Baby + Carrier as a single unit. You can put your baby on your back very easily, just like putting on a backpack! The Beco Butterfly's removable infant insert for newborns allows your little baby under 15 pounds to ride higher in the carrier in an ergonomically comfortable position. When your baby outgrows the need for the newborn insert, you simply place her into the main Y shaped internal sling attached to the carrier's shoulder straps, which improves the distribution of the baby's weight and enables parents to pass baby from one wearer to another without taking the baby out of the carrier. The inside panel acts as a safety harness and prevents baby from slipping down or falling out of the carrier. 1) Child can be worn on front or back and easily shifted from one to the other. 2) Tall, tapered carrier body provides lots of upper body support for your baby or toddler, holds baby close to your body for greater comfort. 3) A Sternum (chest) strap is connected to the shoulder straps and slides along their length. 4) Padded waistband is firm and supportive while maintaining a slim profile. 5) High quality designer fabrics are smooth, stylish, and comfortable against the skin. 6) Padded leg holes prevent chafing of little thighs. 7) User waist range fits 25 to 50 inches (63 to127cm). 8) User height range fits from 4 foot 9 to 6 foot 2. (144cm to 188cm).