This is my second pair of On Clouds. I love that it is lightweight and breathable. I can wear these shoes all day and be as comfortable at midnight as I am when just starting the day. ( Think day at Disneyland) The downside is that these shoes run at least a size smaller and narrower than usual. I recommend always trying on in-store as different styles fit differently. If ordering online order several sizes to ensure you get the right size. I'm not fond that because they run small, I must purchase a men's shoe to get a proper fit. I typically am a women's size 11M with no issue. In an On cloud, I have to purchase a men's 9.5M for a proper fit. I remove the elastic laces and use the addition shoe laces to get the best fit. I mentioned this to the sales associated during my recent purchase and he did mention that the elastic laces have been know to " pop" and break. 4 stars only because of the too small sizing.

This shoe is a bit of a disappointment in that I wanted it for fairly serious indoor training. The shoe is incredibly light, and looks pretty cool. Having said that it doesn't seem like a serious sports shoe at all. It's got a very strange lacing system which is flimsy and insubstantial and difficult or impossible to tighten. In fact, as it seems meant to be worn it's actually a slip on. There is a spare pair of "laces" that come with it. The guage and eyelets are extremely small and narrow and the bottom four floating eyelets are dummies. You can't really tighten up this shoe in any meaningful way. Depsite appearances, this is a great show to toss on and use for a trip to the mall or walking around town or the house. But as a serious workout/running shoe I'd look elsewhere. Size it down if you want it to fit tight enough to wear at the gym or running.

Having owned a pair of Cloudflyer's for about a year, I had high expectations for this more casual wear shoe. It wasn't to be.

First off, throw both sets of shoelaces in the trash. Depending upon multiple factors (time of day, thickness of socks, etc.) the elastic laces (speed-laces) were either too loose or too tight, but rarely just right. If you trim those laces, the ends unravel and after a few days are a hot mess. The more conventional laces do NOT stay tied and I found myself constantly having to tie them over and over and over again throughout the day. Double knotting would solve, but who wants the hassle on what should be a casual wear shoe.

Probably, due to the minimal cushioning in the tongue, I often find that shoes are uncomfortably tight until I'm able to adjust lace tensioning through the length of the shoe.

Perhaps my very positive experience with an earlier pair of ON shoes jaded my expectations for this less expensive casual cousin, but I'll relegate this Cloud 5 to an occasional use shoe and will not purchase this model iteration again. As many positive online REI reviews of this same model attest - your mileage may vary.

On a positive note, they look great, are very lightweight and other than pebble retention in the wide tread, I remain a fan of ON's CloudTec cushioning.

I'm sure it must be a one-off situation but my shoes routinely squeak when walking. It's not the type of squeak that you hear from basketball players. It's a simple squeak/swoosh that happens on any type of surface. I'm simply walking into the gym from the parking lot or in the locker room. It's a little unfortunate because my wife has had 3 pairs of On shoes as have several relatives. Because they don't experience the issue, it's got to be manufacturing. Be mindful of their customer support. They're very prompt and courteous but quickly denied the warranty. I want to like these shoes but I feel like George Costanza in his new suit swishing and squeaking everywhere I go.