Not all the best running shoes have huge stacks of foam in the midsole now, though it is a growing trend. That’s largely because foams are getting lighter, so you can put more material into a shoe without it becoming too bulky.
The Salomon Aero Glide exemplifies this, since it has a high stack of foam but weighs less than 10oz in a UK size 9. It’s a comfortable shoe to rack up a lot of miles in, but it’s not as impressive as the best cushioned shoes available.
