06/02/2026
If there is a visible dip in your mattress where you sleep, it is done. Foam compresses permanently under your body weight, and once it loses its bounce-back it creates a valley your spine sinks into every night. Press your hand into the middle. If it does not bounce back, your mattress is officially over. Once the sag passes one inch deep, no topper or pad can save it. Full breakdown at https://mattressmiracle.ca/blogs/mattress-miracle-blog/why-is-my-mattress-sagging