Traditionally, Black Friday is one of the biggest shopping days of the year, if not the biggest. If you need a new, high-quality mattress, you might want to take advantage of Black Friday deals. The next big mattress sales usually aren’t until New Years Day or Presidents Day. You can judge the value of a Black Friday mattress deal by comparing the sales price to similar mattresses and their prices. Try to ignore how large a percentage the company takes off the original retail price, as this figure can be inflated to seem like a better deal.