The drop is often confused with the stack height, which only refers to the amount of cushioning under the heel.
For example, Hoka shoes, known for their thick cushioning, may have a 32mm stack height. But most if not all of their models have a 4mm drop, which is pretty low. So, as you can see, a low drop, does not translate to less cushioning. It just influences which part of your foot will strike the ground first – the forefoot, midfoot, or heel.
Altra running shoes are known for having a zero drop. So if you’re looking for a more leisure running experience where you land on your heels, Altra would not be the brand for you, no matter which model you choose.