17 Black Friday mattress sales from popular companies like Casper, Leesa, and Helix

Among the many Black Friday sales going on all over the Internet this week, mattress deals in particular stand out because mattresses are usually so pricey. Mattress companies like Casper, Leesa, Helix, and more are pulling out the stops this holiday to give you hundreds of dollars off popular mattresses, along with freebies like sheets, pillows, and shipping.

Now is probably the last time to save big on an important investment like a mattress until next year, so we're showing you where you should shop to take advantage of great deals. We've vetted many of the mattresses (and pillows and sheets) ourselves and included links to those reviews for your reference.

If you're interested in learning more about some of the companies we list below, these guides will help you out:

• The best mattresses you can buy
• The best mattresses for side sleepers
• The best mattresses for back pain
• The best foam mattresses
• The best air mattresses
• The best mattress toppers
• The best mattress protectors