Rode with these a few times already, fairly comfortable. They do get hot, but what do you expect, you have a knee and shin guard around your leg while riding a bike, you will sweat. They work great on the downhill, and they did not slide on the climbs. I would not recommend these for long periods of uphill, but they do fit in my CamelBak (I have a larger one) so I can carry them to the top and then put them on. Overall, great product for the price.