4th of July mattress sales — the best deals from Casper, Leesa, & more

These Fourth of July mattress sales include hundreds of dollars off the best mattresses from online startups and popular brands.

On top of that, some of these mattresses come with freebies like pillows, weighted blankets, and sheets.

Below, you'll find 17 companies holding sales, along with links to our reviews of their mattresses where applicable.

For more Fourth of July savings, check out our comprehensive list of sales.

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 this big on a mattress until Black Friday and Cyber Monday, so we're showing you where to shop to take advantage of great deals. We've vetted many of the mattresses (and pillows and sheets) on the list 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

To potentially save more on your online-shopping purchases, you can visit Business Insider Coupons to find up-to-date promo codes for hundreds of stores.