Did you know that your sofa's foam density is the weight of one cubic block of foam cushioning? That's right: it's basically how dense the cushioning is.
The higher the density, the firmer the feel of the foam. So why does this matter? If you're looking for something soft and plush, you'll want to stick with a lower-density foam. If you're looking for something firm, go for something high in density!
Firm Comfort Level
Firm sofas, sectionals, and chairs are designed with a particular type of cushioning. The feel of these seats is more supportive and specifically designed to absorb pressure as you lounge. It's better to choose firm if you want a denser surface.
Medium Comfort Level
Between plush and firm, medium seats balance contour and support. Built with cushioning made to give just a tad as you sit, the medium level doesn't keep you too upright—but also doesn't let you sink too far down. Go with the medium if you want something that's not quite plush but not quite firm.
Plush Comfort Level
Soft and squishy isn't for everyone. But think about it—when you're done with your day, don't you want to be able to relax in a fluffy cloud? If so, some seats come with plush-level cushioning. Go with plush if you want to decompress on a perfect cloud fully!