Review on Stay Cool and Comfortable Anywhere with the Portable Neck Fan: 💨 Hands-free, USB Rechargeable, and Adjustable Wind Speed for Sports, Outdoor Travel, and More! by Patricia Casillas

I can walk twice as long with it, I can even run very fast on the treadmill and it doesn't wobble like the ones on the neck straps I used to use. You can easily tuck it under both shoulder straps and it doesn't even move. Make sure the air vents are facing UP. At first I thought it wasn't going to work, and then I realized the vents were facing down so the air wasn't being blown down my neck and face. Three speeds. I always use high. Great for a hot boat or a day at the beach