I've had the Ibex Arivee bibs for over a year. The material feels pretty good and they do well in a range of temperatures- I haven't noticed them being overly warm in the summer, but YMMV. And the wool fabric seems to have held up to washings very well. That said, there are some downsides in my opinion. The material isn't as stretchy as the nice modern lycra so since I lost some weight they have felt a little baggy (maybe this is just a fit issue more than a wool issue). And the chamois quality seems a little low after getting used to my other bibs- PI Pro and Rapha (they were on sale!).