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Don’t sleep on these end-of-summer markdowns.

If you're in the market for a great mattress, Labor Day weekend is among the best opportunities of the year to snag one on sale. Whether you prefer a memory-foam, hybrid, or coil-spring, you're bound to find serious deals on mattresses from a slew of top brands. Plus, buy now and your new mattress will be set up in your bedroom well before the holidays roll around — just when you need extra sleep to tackle tasks like shopping for gifts and cooking family meals.

That's why we're psyched to share this hot tip: Amazon just slashed prices on a ton of popular, highly rated mattresses for their Labor Day sale. Expect end-of-summer discounts on brands such as Casper, Tempur-Pedic, Sealy, and others, with markdowns on their most popular mattresses in a range of sizes. We combed the site to find the best deals on offer, but we suggest investing now before the style you want goes out of stock.

For more unbeatable Labor Day deals, check out The Best Labor Day Sales on Everything for the Home.

If you’re a back or stomach sleeper and need to upgrade your mattress, Tuft & Needle's Original is an excellent choice. It’s available in twin, twin XL, full, queen, king, and California king — all on sale for 20 percent off at the time of this writing.

The medium-firm Original Mattress features cooling gel-infused foam technology that's moisture- and heat-wicking to keep you comfortable through the night. Another major plus is that Tuft & Needle offers a 100-night sleep trial and their mattresses are backed by a 10-year warranty.

This 11-inch, medium-firm hybrid mattress from Casper is ideal for side-sleepers, and right now you can knock $300 off if you're in the market for a king size.

The memory-foam mattress features three points of firmness to full-body support. It's softer around the shoulders and more firm around the waist and lower body, plus the foam is perforated and breathable for a cool night sleep. The base's springs provide even more support and the mattress has a firm border to help you get on your feet.

For just $600 at the time of this writing, you can get a queen-size Sealy hybrid mattress for 25 percent off its original price.

The 12-inch medium-firm mattress has a top layer of adaptive foam for extra softness and an inner layer of responsive coils for support. The mattress is cooling and comfortable, with a reinforced border for more sleeping space and a firm seat to help you find your feet when morning grogginess sets in.

Whether you're upgrading your kid's sleeping quarters for the new school year or finally setting up a guest room, don't miss the chance to score Nectar's medium-firm twin-size mattress for 20 percent off.

The 12-inch gel memory-foam mattress features a quilted cover that helps your body regulate heat so you stay cool, plus a conventional foam base layer and a shift-resistant lower cover. It’s designed for back, side, and stomach sleepers and a medium firmness. The 365-night trial and "forever warranty" are two more reasons to make the investment.

If you're looking for a Cal king memory-foam mattress on sale, this model from Tempur-Pedic currently has $300 knocked off its original price.

The 11-inch, medium-firm mattress is designed to relieve pressure on stress points including your shoulders, back, and hips, and is covered in cooling knit fabric. And, no matter how many times you sleep on it, the mattress won’t lose its shape.