spencer weilerwrote a review of La Sportiva Helios 2.0 Running Shoe - Men's on September 16, 2016
Familiarity: I've used it once or twice and have initial impressions
Fit: Runs small
If you think La sportiva shoes are "true to size" then either you think you have a smaller foot than you do or you like your toes curled like a climbing shoe. Definitely size up at least 1/2 but likely 1 whole size if you actually want any space for your toes. I wear a size 10 in US and had to get a size 44 in these babies. This shoe does not have a rock plate so running over small rocks causes stabbing pain in your foot. The sole isn't very resistant to granite. I know there are better La sportiva shoes out there for technical running but if you want a lightweight shoe for buttery smooth singletrack they'd work fine.