Review on Cool On The Go! Personal Clip On Fan with LED Lights - Stay Cool Anywhere, Anytime - USB Powered Fan for Ultimate Comfort - Hands-Free Fan for Strollers, Tables, Travel, and More - Blue/White by Travis Vasquez

I was very excited when I ordered this because unfortunately I sweat a lot. It was such a disappointment. The fan is so weak you can barely feel it, and they have to lengthen the intake manifold because it's so short your shirt is constantly snagging on the port, further restricting airflow. I'm an engineer so I know what you need to do. To the manufacturer: replace the fan with a more powerful one, I mean at least 3-5 times more powerful. You can probably still use the same case as before. You will then need to provide a semi-flexible extension of about 4 to 5 inches that can be attached to the inlet port/manifold and secured with a zip tie. This allows the fan to run without resistance. If you send an extension, customers like me and most guys who leave their shirt open can use it without the shirt blocking airflow. I had to send it back and I'm sorry but if you make these changes to the design I promise I will buy from you again. Much luck!