Cushion Filler: Types, Uses, and What Makes One Better Than Another

When you sit down on a sofa, chair, or pillow, the cushion filler, the material inside that gives shape and support. Also known as cushion stuffing, it’s the hidden layer that decides whether you sink in too far or feel like you’re sitting on a brick. It’s not just about softness—it’s about how long it lasts, how well it bounces back, and whether it stays comfy after years of use.

There are three main types you’ll run into: foam filling, a dense, molded material that holds its shape and offers firm support; polyester fiberfill, a synthetic, fluffy material that’s soft and affordable but flattens over time; and down fill, real feathers from ducks or geese that provide luxurious, cloud-like comfort but need regular fluffing. Each one works differently. Foam is great for seats that need structure—like dining chairs or modern sofas. Fiberfill is common in throw pillows because it’s cheap and easy to wash. Down is the go-to for high-end loungers and beds, but it’s not for everyone—some people are allergic, and it needs more care.

What you pick affects more than comfort. A cheap fiberfill cushion might look fine today, but in six months, it’ll be flat and lumpy. High-density foam lasts longer and keeps its bounce. Down feels amazing but needs you to plump it up every week. And if you’re reupholstering an old chair or making your own cushions, knowing the difference saves you from regret later. You don’t need to spend a fortune, but picking the wrong filler means you’ll be replacing cushions sooner than you thought.

Most of the posts here dig into real-world details—like how to choose the right density of foam for a sofa, why some down blends are better than pure down, and how to fix a sagging cushion without reupholstering the whole thing. You’ll find practical advice on what to ask when buying new furniture, how to spot low-quality filler in a showroom, and even how to make your existing cushions feel brand new again. Whether you’re a DIYer, a homeowner, or just tired of sitting on flat pillows, this collection gives you the facts you need to make better choices—no fluff, just what works.