Amazon is rolling out some of the biggest Black Friday deals as sales season heats up. The retail giant has announced its official Black Friday sale will begin on November 21 and run through December 2. From Dyson and Levi's to Hot Wheels and Ninja, you can expect tons of massive markdowns on your favorite name brands.

Walmart’s big “Black Friday Deals” sale is coming to end but you still have time to grab a deal before it's over. Here's the best holiday markdowns to save on before they're gone.

While Amazon’s official Black Friday event will start on 21 November, the online giant has been releasing early deals, giving shoppers plenty of time to grab a bargain or two before the annual sale comes to a close on 2 December.