This baby carrier BabyBjörn referenced - 023071 - Baby Carrier Original - Black - Spirit, Cotton was helpful as easy to use and really safe (baby does not fall or get carapater), but the big drawback is that carriage is sitting with baby resting on his crotch! not ideal for the genitals! that is why some pediatricians recommend other ports, especially in a sling. Now, if it is used occasionally and for small periods of time, it has no repercussions on the developing baby. it must be reasonable, in fact!