Walmart has just dropped an amazing flash mattress deal, and it saves you up to $331 on the most cooling bed I've ever tested. The SweetNight CoolNest Memory Foam Mattress, now down to $339.99 in a queen size at Walmart , delivers cool-to-the-touch comfort for side sleepers at a budget-friendly price.

The CoolNest Memory Foam Mattress may be a low-cost, all-foam bed, but it rivals some of the best mattresses on the market in terms of temperature control and value for money. At SweetNight, the typical sale price of a queen CoolNest is $399.99. so this great Walmart discount saves you an extra $60.

This is one of the best mattress deals I've seen this month, as the SweetNight CoolNest rarely strays from its typical sale price.…