As part of its daily deals, Amazon has the Casper Sleep Essential mattress on sale for 20% off, dropping the prices to as low as $280. All of the sizes are available in this sale, so you’ll want to make sure to check it out before the day is over. The Essential mattress has a 3-layer hybrid foam to offer great support, breathability, and comfort. It sleeps cool thanks to the open cell foam top layer and offers minimal motion transfer so you won’t wake your sleeping partner as you toss and turn all night. If you’ve been eyeing a Casper mattress but had a hard time justifying the price in the past, this deal makes it hard to resist. All of the sizes are 20% off, making the prices: Make sure to pick up a bed frame and box spring foundation to complete your new mattress setup. Casper does offer a 100-night risk-free sleep trial, so if you end up not liking it you can always return it at no cost to you. It’s backed by a 10-year warranty.