How strong is the edge support?

Edge support is a standout, scoring 8.9 out of 10 with sinkage of just 2.5 inches near the rim, the firmest edge in Springwall's flippable lineup. The pocketed coils run to the perimeter and the thin firm comfort layer adds almost no soft give, so the side barely yields under a sitting load and the full width stays usable for sleeping. It feels rock-solid when you sit on the edge to dress.