We found 30 incredible Prime Day mattress deals, some as low as $399

Shopping for a new mattress can feel a lot like buying a new car—it’s expensive, it’s time consuming, and you’ve gotta get hands-on with a bunch of different models to find the best one.

Or do you?

These days, mattress shopping is predominantly done online, which can sound scary if you’ve never done it before. A mattress is a big purchase, but you can get one shipped directly to your door and even set up in your bedroom for you. Nearly all online mattress companies offer 100-night trials, so if you buy one and end up not liking it, you can easily return it.

Shopping events—like Amazon Prime Day—offer great opportunities to shop for mattresses. Though it’s risky to buy a mattress from a brand you don’t recognize on Amazon or Walmart, many of our favorite mattress retailers run major sales during Prime Day.

I’ve been writing about mattresses for the past five years, including testing some of the top brands in a sleep lab, so I’m going to break down the best mattresses I’m seeing on sale this week and which models I think you should consider.

The best mattresses on sale during Prime Day

Other mattresses on sale during Prime Day