The new OE 2 child carrier weighs in at 4.4 pounds including a detachable backpack and offers hands free transport for children weighing up to 45 pounds. It is designed to offer hip support and transfers the weight to your waist. The frame is aluminum/steel, with EFE foam encased in a durable polyester material. Includes a removable fanny pack, adjustable 4-point safety harness, ankle straps and more.