Your couch sinks when you sit down, the cushions slide, and getting back up takes effort. The problem isn’t your cushions — it’s the worn-out support underneath. Springs stretch, webbing loosens, and the frame stops holding weight the way it should. The Meliusly Couch Cushion Support Board fixes the root cause. It slides between the sofa frame and your seat cushions to create a firm, level surface that eliminates sagging instantly. Heavy-duty 8mm reinforced plywood panels distribute weight evenly across the entire frame instead of letting it concentrate on the worn spots. The industrial Oxford polyester cover provides an anti-skid surface that grips the frame and prevents shifting. Rounded corners protect your upholstery from snags. Available in 8 sizes — from loveseat (48”) to oversized sofa (79”) and depths from 21” to 28”. Measure the inside of your sofa frame before ordering: depth is front rail to back rail, length is arm to arm. Choose the size closest to your measurements. Works with couches, loveseats, sectional pieces, and any sofa with removable cushions. Installs in under a minute and stays permanently under your cushions — no tools, no trimming, no maintenance. Also works as a couch firmer for newer sofas that feel too soft, even if they’re not sagging yet. A fraction of the cost of replacing your furniture.