Regular crates, the ones that aren't specifically modeled after furniture for aesthetic purposes, are usually made of metal or plastic. With wire walls or vented plastic sides, these types of crates are very durable - as they need to be, as pets large and small can be rough on their environments.
When you're looking for a furniture style crate, you need the material that best expresses top-tier form and function in your home's unique aesthetic. In other words, you're looking for something that matches with your style and decor, but still does the job of housing your pet responsibly and securely. Otherwise, you're going to find yourself needing a new crate soon, anyway - and we want to help you protect your investment!
If you're looking for a furniture style crate, the most popular material by far is wood. Whether it's reinforced or lined by plastic or metal, or simply on its own, a wood crate can be shaped or stained to match any decor or style, and it can be treated so that your pet won't bite or scratch it from the inside.
Because wood furniture style crates will be easy to find and they do the job well, then, the best choice for your furniture style crate is a wood material that's stained or painted to match the aesthetics of the room you plan to use it in.