It's official: Black Friday mattress sale starts today.

For a limited time, Purple is offering up to $400 off mattress + sleep bundles. This is the mattress maker's first Black Friday sale and the best sale of the year on Purple mattresses. Don't want a bundle? Purple is also offering up to $200 off its entire mattress line.

Purple Mattress holds a spot in our best mattress guide. The company is one of the most popular mattress brands because of the unique "Purple Grid" layer in each of its three mattresses. This grid is designed to align the spine and relieve pressure while sleeping. It is also breathable, keeping you cool while you sleep.

In addition to mattresses, Purple is offering up to 20% off select bedding. This sale includes pillows, children's bundles, and home bundles. This is one of the best Black Friday early bird sales.

To see more bedding discounts, follow our guide to the best mattress deals of the day.