I bought these shoes to do aerobics in, not to run. I own both Fila and Skechers tone up shoes, and these are by far the most comfortable of the 3. With the Fila and Skechers all I did was walk in them, and for that function they both work quite well, but with the rocker bottom especially in the Skechers I felt like I would lose balance if I started jumping around with them, not to mention they were both too heavy for exercise other than walking. I put these shoes on and exercised and the shoes absorbed shock as well as provided firm support, are lightweight, and felt so comfortable compared to all other workout shoes I have owned in the past. They look more fashionable than other toning shoes, and have a lower profile with a flat bottom which is safer for aerobics and running. They also are true to size, although as others have pointed out in other reviews, they do run narrow, but they fit my feet well because I have a narrow foot and heel. They also feel great just to walk in, and are just a great all around athletic shoe. I would most definitely purchase these shoes again, and highly recommend them.