Freestanding, Rolling, Rollabout, stand-alone, stand up hairdryers are sometimes referred to as a portable salon dryer. These free-moving standup hairdryers are very handy for salon and home use. A professional standing hairdryer is essential for coloring, hot-perm, conditioning and hair-drying, hair-treatment and spot-caring.
The greatest thing about theses dryers is that you not locked into one space in your salon like a sit down hooded dryer chair. You can use them with any seating or your favorite chair.
I found that these 3 dryers are quite similar and only slightly vary in price. Follow the link for more Budget-friendly dryers under $100
In Conclusion
Standing hooded hairdryers are the most versatile of dryers. They are heavier duty than other home hairdryers. They are also very common as a salon dryer.