This frame baby carrier(carriermom) is designed for mothers. The carriermom is equipped with a baby safety cassette. It is suitable for babies between 6 months and 40 pounds. The carriermom weighs about 4.5 pounds (Packing volume:550*300*150) and has four rollers (two with brakes) to rock the baby. Bring 10L luggage compartment and stretch bags after the backpack; This product has passed the German TUV baby product related test certification. This product strictly follows the American standard ASTM F2549-14A.