Amazon Prime Day officially lands October 7th-8th. As a deals writer, I couldn't help taking a peek to see if any sales had started early, and I was not disappointed. Right now, a Casper Element mattress is just $474 for a queen at Amazon, that's a generous 27% discount from an MSRP of $645.

If you're looking to upgrade to one of the best mattresses, Prime Day is a great time of year to invest, offering hundreds of deals on quality mattresses, like the Casper Element. And you don't have to wait. I've spent the day scouting the early best Prime Day mattress deals for sales that have already landed. These three mattresses are my favorite picks so far.

Casper Element Mattress: twin was $445 now $324 at Amazon The Casper Element is made from open-cell Flex Foam, which is made to be more brea

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