The Signature Design by Ashley Queen Size mattress is now on sale for $255.54 for Amazon Prime Day, which is 47 percent off the original price of $477.99.

The the Zinus Green Tea Memory Foam Mattress is Amazon's best-selling mattress and I've just spent the last two weeks sleeping on it. In today's Prime Day deals you can save up to 20% on the Zinus Green Tea Mattress at Amazon , but is it actually worth the money? Short answer: yes it is, especially if you like to sleep on your side.

Most underwhelm. It's Prime Day! We've rounded up all the best, actually worthwhile Amazon Prime Day deals on Wirecutter picks here. Plus: Sign up for Wirecutter's newsletter to get exclusive deals sent straight to your inbox.

Mattresses can get expensive, which is why Prime Day is one of the best times of the year to upgrade your sleeping arrangements. From popular mattress brands like Nectar , Casper and Tuft & Needle to luxe DreamCloud models and budget-friendly finds from Zinus and Linenspa, we've found all the best Prime Day mattress deals available at Amazon now.

Not to be outdone, Nectar has matched Amazon's Prime Day mattress deal. So the big question is - where’s best to buy it from? The Nectar memory foam ranks highly in our best mattress guide and is a great option for those looking for a supportive memory foam mattress with plenty of cushioning comfort.

This Nectar mattress is a whopping 46% off, saving you an unheard of $550 this Prime Day. It has cooling memory foam gel comfort, a year long sleep trial, five layers of mattress material, and a pillow top. Its softness rating is 4 out of 5 stars and almost 4 stars for sleep quality and comfort.

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Amazon reported that the first day of last year's event was the largest sales day in the retailer's history, and total Prime Day sales reached an all-time high of $12.7 billion in the U.S. -- an increase of $800 million from the previous year.

Grab some of our expert-rated and reviewed everyday essential electronics from Amazon, Samsung, Sony, and more, at massive Prime Day discounts.

Dive into a great new novel this summer with these Amazon Prime Day deals on Kindle downloads and hardcover books.