They're breathable, lightweight, and true to size. I recommend going a size down if you're into the type of joggers that are a little tighter and fit to the shape of your legs. They're pretty flexible and stretch well and aren't restricting at all.
I work at a gym standing at the front desk and occasionally moving around doing work based activities and these are by far the most comfortable joggers I've worn for an 8 hour shift. As I stated earlier, they are lightweight and that's because the fabric isn't thick by any means and they can be "revealing" sometimes so just a heads up. I wear oversized shirts so that's not really an issue for me as the shirts hang low but just a little warning for anyone who wears standard sized or smaller shirts. Great product and I would definitely buy another pair.