There's nothing quite as energy-draining as an entire night spent tossing and turning on an uncomfortable mattress. Whether your existing mattress gets unpleasantly hot on summer nights or it's simply too worn-down to provide adequate support, investing in a new mattress can help you fall asleep more easily and wake up with fewer aches and pains. 

Amazon Prime Day runs from now until July 13 at midnight PT, making it a great time to purchase a new mattress for your bedroom. In addition to some of the best patio furniture and robot vacuum deals we've seen all year, you'll be able to shop mattresses from popular brands like Zinus, Casper, Tuft & Needle, and more. 

One of the biggest Prime Day mattress deals you'll want to shop is this Tuft & Needle Original Limited Adaptive Foam Mattress, which is currently $284 off. Made from two layers of memory foam, the mattress is designed to provide cushioned support and exceptional cooling all night long. This is because the upper foam layer is infused with graphite—a porous mineral that absorbs moisture—and cooling gel, which work together to wick away warmth and keep you comfortable no matter how sticky your room gets. 

The second layer of the mattress provides durable support as you sleep, contouring to your body while keeping it in proper alignment. It's designed to be medium-firm, meaning it has a comfortable amount of give when laying on it, but not enough to make you sink in and feel stuck. This limited-edition Tuft & Needle mattress also features an anti-microbial fabric called HeiQ HyPryoTecht, which helps guard the mattress from bacteria growth and odors. Because of this, you won't have to worry about mold, fungi, or other harmful bacteria deteriorating your mattress, causing stains, or creating nasty smells.

To buy: From $487 (was from $695); amazon.com.

Thousands of Amazon reviewers have raved about the combination of plushness and support the Tuft & Needle Original mattress offers, including shoppers with chronic back pain, arthritis, and more. 

"I have severe back problems that require several more surgeries," one reviewer wrote, adding,  "After letting [the mattress] expand for 24 hours, I slept on it for the first time and have loved it ever since. I saved a ton of money, and despite having two broken ribs, [I] can't even feel the pressure points."

"My partner and I were both waking up a lot [in the night] and each had to see chiropractors for pain in our backs," another reviewer said, adding that they spent "countless hours" researching different mattresses to find the right one. "[We] finally took a chance on this one and it has changed our quality of sleep significantly. No more waking up in the middle of night and no more wasted hours to get quality sleep."

Another Amazon reviewer with "chronic lower back issues" described the Tuft & Needle mattress as "perfectly supportive and worth every penny." They added that the mattress is "incredibly soft and comfortable," making it perfect for back and side sleeping.

Save hundreds on the Tuft & Needle Original Limited Queen mattress from now until midnight PT on July 13, and stay up to date on all the best Prime Day deals here.