The Air Max BW  is a redesign of the original Air Max 91. It's considered to be one of the best selling Air Max shoes of all time, and that mostly has to do with the fact that it's a very affordable model of the shoe but still packs enough punch for the heavy runner. It has a large air cushioning unit that was included in the design, which means you can actually see it on the shoe itself, instead of it being hidden?inside the rubbers of the soles. There's a bubble in the heels, which is completely see-through and adds a very pleasing design aesthetic to an already-good looking running shoe. If you're looking to buy an Air Max shoe and you have kind of a tight budget, the Air Max BW is the way to go, as it's very affordable and still high quality. You won't go wrong with choosing the Air Max BW.