Hi CooperCanfield,
The materials are all good quality and there aren’t any obvious weak links in the mattress.
While foam edge support isn’t the norm or normally necessary with a latex mattresses (see post #2 here) for some people who sleep on the very outside edge of their mattress or who prefer a firmer edge for sitting or getting in and out of bed they can certainly be a preference. Edge support could make a bigger difference for some people with a softer support core (such as the 24-26 ILD support core in this mattress) and/or higher weights.
Your own testing and experience is always the most reliable way to assess any mattress for PPP (Posture and alignment, Pressure relief, and Personal preferences).
Phoenix