The Go Forward Evolved Ergonomic Carrier features the comfort of four ergonomic carrying positions with an easy to use, intuitive design. The ergonomic design supports baby's back and hips in the perfect "M" position with knee-to-knee seat support in all positions: Facing-in Infant Seat, Facing-in Widened Seat, Facing-out, and Back Carry. The comfortable material and wide, weight-transferring waist belt, make this carrier perfect for both parent and baby's comfort. No newborn insert required, the adjustable seat extends as child grows from newborn to toddler, providing continuous knee-to-knee, ergonomic support. Support panel on waist band flips up to create a supportive, ergonomic seat for out-facing position. Includes soft muslin hood for sleepy time and sun protection as well as an attachable silicone teether. May be used for infants and children from 8 - 40 pounds. Waist belt extends from 26 inches to 60 inches. - 4 Ergonomic Positions: Facing-in Infant Seat, Facing-in Widened Seat, Facing-out, Back Carry - Support panel on waist band lifts to create ergonomic out-facing seat - Knee-to-knee, support for newborns through toddlers with no inserts required - Includes soft, removable muslin hood and silionce teether