Mattress manufacturer Sealy is having a huge sale on one of its best mattresses, the Chill mattress, for 24 hours only. Today only, Cocoon by Sealy is offering 25% off Chill mattresses. In addition, a free pillow and sheet set ($179 value) is included with the purchase of any mattress. This is one of the cheapest mattress deals we've seen.

If you're looking for the best mattress on the market, you won't be disappointed with Sealy's Cocoon. Its Chill mattress line has been voted the best budget option for hot sleepers and one of the best mattresses for stomach sleepers. What makes this mattress especially good is that it absorbs and dissipates heat, providing a refreshing sleep.

All Chill mattresses are available in two types: medium soft and extra firm. Medium Soft offers more cushioning (ideal for side and multi-faceted sleepers), while Extra Firm is more firm and supportive (ideal for back sleepers). Cocoon by Sealy offers free return shipping if you're not sure which mattress is right for you. All mattresses also come with a 10-year warranty.

As an added bonus, you get two 100% Supima cotton DreamFit pillows and 260 thread count DreamFit sheets. The combined value is $179.