Hair doesn't wrap around the roller! This design is perfection!  True test was trying it out at my mom and dads house because her hair is super long and they have an inside long-haired dog. This vacuum did not disappoint! It tacked the hardest jobs with GREAT EASE! The powered detect technology was evident when you went over certain parts of the carpet that needed deeper cleaning.  I also love the fact that it isn't extremely loud. I can't brag on this vacuum enough!