LIGHTLY WEIGHTED: On the chest and sides to give the feeling of being held. The weights are filled with non-toxic poly beads (same as those used in children’s toys) and were created using physio-therapy standards to give just the right amount of pressure. Moms report longer sleep in 1-3 nights. LASTS 0-6 MONTHS: The 2 sizes in 1 design means this swaddle lasts twice as long as regular swaddles. Babies legs go in the small inner pocket for the first few weeks and then in the larger pocket for up to 6 months.