My first ASICS was the Nimbus 12 and I loved them. I had purchased them based on other reviews from underpronators with high arches like me. Time for a new pair, and I couldn't get the Nimbus 12 anymore. The reviews of both the Nimbus and Cumulus 13 were that the shoe is now more narrow, and I saw a couple of underpronators stating that the Nimbus 13 was no longer as good for them as the previous Nimbus. I went to the ASICS site and while both showed in the underpronate range, the Cumulus actually stated in the description it worked for underpronators, and the Nimbus wasn't as definite on that. I will say it's important to look at the description. The Pulse also showed in the range for underpronate, which I don't understand, because the description states otherwise. Unfortunately I ordered before I saw the description, and I can say the Pulse is not a shoe for underpronators!

So those went back and I ordered the Cumulus 13. It is more narrow - but for me it feels good, my foot is a regular width but I suppose on the narrow side of regular. To start I noticed the "gel" more than the Nimbus, but my feet quickly settled in and they fit like a glove now. My right foot is worse than my left for rolling out and heel pain, and I have had no heel pain in these so far. The base under the heel is wide like the Nimbus, maybe not quite as much as the Nimbus 12, but does have the cushion and stability for underpronators who put a lot of stress on the outside of our heels.

The only thing I wish was a little different, the piece that comes up a little over your big toe? Doesn't come up quite enough. I have a tendency to put holes in my shoes above my toe so not sure how long that will hold up.

A plus? The laces. They are flat and tend to stay tied without having to double knot! I know, weird thing to notice but sometimes double knotting is a pain. :)