Let’s talk about the GZHFBB Custom Window Seat Cushions. First off, customization is their strong suit—you can pick from 7 thicknesses and a rainbow of colors. I went for the 4.5" thickness in a deep navy velvet, and after patiently waiting 3 days for it to fluff up (thanks, vacuum sealing!), it transformed into a plush throne for my bay window.

The fabric feels luxurious—soft teddy velvet that’s surprisingly cat-proof. My claw-happy tabby attempted a shredding session, but the cushion emerged unscathed. The non-slip bottom? Genius for my slightly sloped ledge, though some reviewers say it’s hit-or-miss depending on your setup.

Now, the cons: A few buyers called these "flat as pancakes," and I get it. If you expect a pillowy cloud, opt for the 6.5" thickness. My 4.5" version strikes a balance—supportive but not sofa-deep. Also, measure TWICE! One reviewer’s 7-inch measuring mishap turned their cushion into a pricey yoga mat.

Final verdict? For pet owners and sunbeam loungers, this is a win—just double-check dimensions and go thick. Skip if you want instant fluff; these need decompression time like a grumpy cat after a nap.