Can I put a newborn infant in Foonf?

No. Foonf can only be used with children who weigh at least 6.4 kg (14 lb), are 64 cm (25 in.) tall and who can sit upright unassisted. It is very important that a proper recline be achieved for newborn infant without proper head control. A newborn infant sitting to upright could cause their head to slump forward restricting their ability to breath.