With Prime Day fast approaching, many shoppers think the holiday is all about tech and gadgets, and there are plenty of Prime Day deals on mattresses, too. Mattress manufacturer Leesa, however, is getting off to a good start with its own mattress promo.

For a limited time, Leesa is offering up to $400 off all mattresses. In addition, two free pillows with the purchase of any mattress. This is one of the best mattress discounts we've seen this month and an extension of the Memorial Day discount.

Leesa offers three different mattresses in its collection. If you are looking for the best mattress in its collection (and the most affordable), you will want to check out the Leesa Original. In our review of the Leesa Original mattress, we found that the all-foam mattress provides just the right amount of firmness to hold your body in place.

The top layer of the mattress is made of breathable foam to keep you cool while you sleep. It is ideal for all types of sleepers, including back, side, and stomach sleepers. Soft to firm to medium firm comfort.

We also like the company's ethical stance. Leesa is a certified B Corporation and is committed to high standards and transparency. All mattresses are manufactured in the U.S. and the company donates mattresses to children's hospitals and underprivileged children.