We have had a few folks commenting about the PN and safe sleep. This is a good summary of the AAP GUIDELINES and covers each category. The first, ALONE OR A, is to address the issue of co-sleeping, which has been associated with infant deaths. The recommendation is that each infant should sleep in a dedicated sleep space with a dedicated sleep surface. The PN certainly does not violate this tenet. The second, BACK OR B, reinforces the need for back sleeping, which is a major reason we see so much head flattening and why there is a need for PN in the first place. As I have posted in the past, back sleeping is associated with a slight but measurable drop in oxygen saturations versus prone or stomach sleeping. I believe that much of that has to do with the position the head assumes when an infant lays on their back against a flat surface- neck flexion and rotation. The PN keeps the neck in neutral and allows some head rotation but not to the extremes. It also negates the issue of head flattening, which prompts parents to do insane things like side sleep, prop the head over, use positioning devices that hold the infant and/or head off the flat spot. Again, advantage PN. And lastly is CRIB OR C. This is self explanatory, but some people point to the advice to keep the crib surface BARE as a preclusion to using PN. But notice the items that are specifically listed as an issue- soft, loose items against which an infant can suffocate. If one explores the safety issues related to this recommendation, they relate to infants suffocating under blankets or against soft bed bumpers. We built the PN with solid plastic walls, a fitted sheet, and no "soft" regions. Fortunately, a firm surface, like the PN IXPE foam, is well tolerated by the infants occiput and is far superior for correcting the head shape (similar to what is used in a helmet). The other safety issue not discussed in this ABC poster is an inclined surface. The CPSC and CDC commissioned a study to evaluate the safety of inclined surfaces in the wake of a series of infant deaths and injuries. The engineer that they hired found that an over 10 degree incline was dangerous and those products were banned. The PN has an incline of only 3.6 degrees, far below the threshold and practically flat. So does PN violate Safe Sleep? No.