So Luke, I test drove the pants today in 100°+ heat index weather (minus the liners), and they were great! My husband also wore his, and he loved them. They're worth the buy (so far)! They breath awesome! The knee protection will take some getting used to, because I'm not used to wearing knee protection. The liners seem like they'll keep you warm as well. They are a tad bit long on both me and my husband, but better than being short. Going on a long three day trip in October, and that will be the real test. I would totally recommend them to anyone though.